Medical Certificate for Thai Driving License 2026: Complete Guide

Everything about the medical certificate for Thai driving license: where to get it, costs (100-300 THB), what doctors check, 5 disqualifying conditions, validity period, digital certificates in 2026, sample form, and common rejection reasons.

The medical certificate is one of the mandatory documents for obtaining or renewing a Thai driving license. It is also one of the least understood. Many foreigners show up at the DLT with a medical certificate that is expired, improperly completed, or issued by an unrecognized provider — and are turned away.

This guide covers everything you need to know about the medical certificate requirement in 2026: where to get one, how much it costs, what doctors actually check, the five disqualifying medical conditions, validity periods, the emerging digital certificate system, a walkthrough of the form itself, and the most common reasons certificates are rejected.

1. Overview: Why the Medical Certificate Exists

The Thai Department of Land Transport (DLT) requires every driving license applicant — new or renewing — to submit a medical certificate. The purpose is straightforward: to screen out individuals whose medical conditions make them a danger to themselves or others on the road.

The requirement is established under the Land Traffic Act B.E. 2522 (1979) and its subsequent amendments. The DLT's position is that driving is a privilege, not a right, and medical fitness is a reasonable precondition for exercising that privilege.

In practice, the medical certificate requirement in Thailand functions as a basic screening rather than a rigorous medical evaluation. The examination typically takes 5-10 minutes and costs 100-300 THB. Very few people are disqualified at the medical stage — but when it happens, it is usually for a legitimate and serious condition.

2. When You Need a Medical Certificate

A medical certificate is required in the following situations:

In other words: any transaction that results in a new or renewed physical license card requires a medical certificate. Simple administrative changes (address update, replacement for lost card) do not.

3. Where to Get a Medical Certificate

3.1 Private Clinics (Recommended for Convenience)

Private medical clinics are the most common choice for driving license medical certificates, especially for foreigners. These clinics are typically staffed by a single general practitioner who handles the examination quickly and efficiently.

Advantages:

• Fast: 5-15 minutes total
• Convenient: Many clinics near DLT offices specialize in license medicals
• English-speaking doctors in tourist areas (Pattaya, Phuket, Chiang Mai, Bangkok)
• Walk-in: No appointment needed at most clinics
• Low cost: 100-200 THB

Disadvantages:

• Examination is superficial (often just weight, blood pressure, and a visual glance)
• If you have a complex medical history, a clinic doctor may not feel comfortable signing and may refer you to a hospital
• Some DLT officers are skeptical of certificates from very small clinics and may scrutinize them more carefully

How to Find a Clinic:

• Google Maps: Search "clinic near [DLT name]" or "คลินิกตรวจสุขภาพใบขับขี่" (clinic for driving license health check)
• Near any DLT office, there are usually 3-5 clinics within walking distance that specialize in license medicals
• Look for signs that say "ตรวจสุขภาพใบขับขี่" (driving license health check) — these clinics know exactly what the DLT requires

3.2 Government Hospitals

Government hospitals issue medical certificates for driving licenses through their outpatient departments.

Advantages:

• Lowest cost: 50-100 THB in most provinces (or free for Thai citizens under the universal healthcare scheme in some cases)
• More thorough examination (though still basic)
• DLT officers never question certificates from government hospitals
• Government hospital doctors have more credibility if you have a borderline medical condition

Disadvantages:

• Long wait times: 1-3 hours is typical
• Limited English: Nurses and doctors at provincial government hospitals may speak little or no English
• Bureaucratic process: Registration, queue ticket, waiting room, doctor consultation, cashier — multiple steps
• Inconvenient hours: Outpatient departments typically close by 4:00 PM, and some do not operate on weekends

3.3 Private Hospitals

Private hospitals offer the most comfortable experience but at the highest cost.

Advantages:

• English-speaking doctors and international-standard facilities
• Fast service with appointment booking
• Most thorough examination (blood pressure, vision test, doctor consultation)
• Certificates never questioned by DLT
• Can handle complex medical histories with appropriate specialist consultation

Disadvantages:

• Highest cost: 300-1,000+ THB depending on the hospital
• Often require appointment booking (walk-in may involve long waits)
• May upsell additional tests or services you do not need for a license certificate

Notable Private Hospitals Near Major DLT Offices:

3.4 Can You Get a Medical Certificate Online?

The DLT has been piloting a digital health certification system through the "ThaID" app and integration with select hospital networks. As of mid-2026:

• Full digital certificate: Available in limited pilot areas (Bangkok Chatuchak DLT and a few others). The certificate is transmitted directly from the hospital to the DLT system. You do not bring a physical certificate — the DLT officer pulls it up on their computer using your ID number.
• Partial digital certificate: Some hospitals can email you a digitally signed PDF, which you print and bring to the DLT. This is not the same as the fully digital system and is just a regular certificate in digital form.
• Traditional physical certificate: Still the standard requirement at most DLT offices across Thailand.

Our recommendation for 2026: Get a physical paper certificate unless you are specifically instructed otherwise by the DLT during your Smart Queue booking. The digital system is not yet universal, and showing up without a paper certificate at a DLT that does not participate in the digital program will result in being turned away. Bring paper.

4. What the Medical Examination Actually Checks

The DLT specifies what the medical certificate must confirm. The doctor is required to examine and certify that you are free from five disqualifying conditions. Here is what the examination actually involves.

4.1 The Examination Process (Step by Step)

Step 1: Registration and Vital Signs (2 minutes)

• Nurse or assistant records your name, age, and ID/passport number
• Weight and height measured (often self-reported or estimated if a scale is not available)
• Blood pressure measured with an automated cuff
• Pulse checked

Step 2: Visual Examination (1 minute)

• Doctor looks at you from across the desk
• May shine a light in your eyes
• Observes general appearance, mobility, and coherence
• If you can walk into the clinic unaided and hold a conversation, you will pass this part

Step 3: Brief History (2 minutes)

• Doctor asks if you have any of the five disqualifying conditions
• "Do you have epilepsy? Do you have heart disease? Do you have diabetes with complications? Are you on any medications that cause drowsiness? Have you had any recent surgeries?"
• You answer honestly or say "no" — most people answer "no" and that is the end of it
• If you disclose a condition, the doctor may ask follow-up questions and make a judgment call

Step 4: Certificate Issuance (1 minute)

• Doctor fills out and signs the DLT medical certificate form
• Certificate is stamped with the clinic/hospital stamp
• You pay (100-300 THB) and leave

Total time: 5-10 minutes at a clinic, 30-90 minutes at a hospital.

4.2 The Five Disqualifying Conditions

The DLT specifies five medical conditions that disqualify a person from holding a driving license. These are listed on the medical certificate form itself. A person who has any of these conditions should not be driving — and a doctor who knowingly certifies them as fit to drive could face professional consequences.

#### Condition 1: Epilepsy (โรคลมชัก)

Epilepsy that causes seizures with loss of consciousness is disqualifying. However, the rule is not absolute:

• Controlled epilepsy: If your seizures have been fully controlled by medication for at least 1-2 years, with a neurologist's letter confirming stability, some DLT medical officers will certify you as fit to drive. This is at the doctor's discretion.
• Seizures limited to sleep: Nocturnal seizures only (never while awake) may be considered acceptable.
• Simple partial seizures (without loss of consciousness): Some doctors will certify if these do not impair driving ability, but this is at their discretion and may require a specialist letter.
• Uncontrolled epilepsy with loss of consciousness: Disqualifying. No legitimate doctor will sign the certificate.

If you have a history of epilepsy, you should see a neurologist and obtain a letter stating your current status and fitness to drive before visiting a clinic for the certificate.

#### Condition 2: Heart Disease (โรคหัวใจ)

Not all heart disease is disqualifying. The DLT is concerned about conditions that can cause sudden loss of consciousness while driving:

• Disqualifying: Recent myocardial infarction (heart attack) within the past 6 months, unstable angina, severe heart failure (NYHA Class III-IV), arrhythmias that cause syncope (fainting), and untreated severe aortic stenosis.
• Not disqualifying: Well-controlled hypertension, stable coronary artery disease treated with stents or bypass (more than 3-6 months post-procedure, with cardiologist clearance), mild to moderate stable heart failure (NYHA Class I-II), and pacemaker-controlled arrhythmias without recent symptoms.
• Gray area: Atrial fibrillation without symptoms, some valve conditions. A cardiologist's letter is strongly recommended.

#### Condition 3: Diabetes with Complications (เบาหวานที่มีภาวะแทรกซ้อน)

Diabetes itself is not disqualifying. The concern is diabetes-related complications that impair driving:

• Disqualifying: Severe hypoglycemic unawareness (you cannot tell when your blood sugar is dropping), frequent severe hypoglycemic episodes requiring assistance, severe diabetic retinopathy affecting vision, severe peripheral neuropathy affecting foot control, and recent diabetic ketoacidosis.
• Not disqualifying: Well-controlled diabetes (Type 1 or Type 2) with no complications, diabetes managed with diet alone, or diabetes with stable, mild complications that do not affect driving (mild neuropathy, mild stable retinopathy).
• You may need an HbA1c result and an ophthalmologist's report on your visual function.

#### Condition 4: Mental Disorder or Cognitive Impairment (ความผิดปกติทางจิตหรือความบกพร่องทางสติปัญญา)

This is the broadest and most subjectively assessed category:

• Disqualifying: Severe dementia (unable to understand traffic rules or navigate), active psychosis with hallucinations or delusions, severe depression with suicidal ideation, severe substance use disorder, intellectual disability that prevents understanding of traffic rules.
• Not disqualifying: Mild to moderate depression or anxiety (treated, stable), ADHD (treated, stable), well-managed bipolar disorder (stable on medication), past mental health issues that are fully resolved.
• Psychiatric conditions are evaluated on a case-by-case basis. A psychiatrist's letter describing your condition, treatment, stability, and fitness to drive is very helpful.

#### Condition 5: Alcohol or Drug Dependence (การติดสุราหรือสารเสพติด)

Active substance dependence that impairs judgment or motor function:

• Disqualifying: Current alcohol use disorder with daily consumption affecting function, current use of illegal drugs, misuse of prescription medications (benzodiazepines, opioids) affecting alertness, and any recent DUI conviction (within 1-3 years).
• Not disqualifying: Past substance use issues with documented recovery (1+ years), moderate social drinking without functional impairment, and prescribed medications taken as directed without sedating side effects.
• If you are on prescribed medications that cause drowsiness (certain antidepressants, antihistamines, muscle relaxants, opioids), the doctor will note this. Taking such medications does not automatically disqualify you, but the doctor may add a recommendation that you do not drive while the medication is active.

4.3 What Is NOT Checked

It is important to understand what the medical certificate examination does not cover:

• Vision acuity (Snellen chart): The DLT medical certificate does not require a formal vision test with a Snellen chart, though some clinics and hospitals perform one anyway. Vision is technically assessed during the DLT's own physical reaction test (color blindness and peripheral vision).
• Hearing: Hearing is not tested. Thailand does not have hearing requirements for non-commercial driving licenses.
• Blood tests: No blood is drawn. There is no drug screening or alcohol test.
• Urine tests: Not required for a standard driving license medical certificate.
• Pregnancy test: Not applicable and not tested.
• X-rays or imaging: Not required.
• Electrocardiogram (ECG/EKG): Not required unless indicated by cardiac history.

The medical certificate examination is a screening — it is not a comprehensive physical. A person could have early-stage cancer, high cholesterol, or mild asthma and still pass the driving license medical because none of those conditions (in their early or mild form) impair driving ability to the degree that concerns the DLT.

5. Validity Period

5.1 30-Day Rule

A medical certificate for a Thai driving license is valid for 30 days from the date of issuance. If your certificate is dated more than 30 days before your DLT appointment date, it will be rejected.

This is strictly enforced. Do not try to use a 31-day-old certificate. DLT officers will check the date and return the certificate if it is out of date.

5.2 Strategic Timing

Plan your medical certificate around your DLT appointment:

Do not get your medical certificate more than 1 week before your DLT appointment. This leaves a comfortable buffer while staying well within the 30-day window.

5.3 If Your DLT Appointment Is Delayed

If your DLT appointment gets postponed (you fail the written test and must return, or the DLT reschedules you), and your medical certificate expires, you will need a new certificate. There is no provision for extending the validity of an expired certificate. You will pay the clinic or hospital fee again.

This is another reason to get your certificate close to your DLT appointment date — to maximize the buffer if rescheduling occurs.

6. The Medical Certificate Form (Walkthrough)

The DLT uses a specific medical certificate form. It is a single-page document (A4 size or slightly smaller). Here is what it contains and what each field means.

6.1 Form Layout

Header: The form is typically headed with the clinic or hospital name and logo. Some clinics use a generic government form; others use their own letterhead with the DLT-required language embedded.

Patient Information Section:

• Name (ชื่อ-สกุล): Your full name as it appears in your passport
• Age (อายุ): Your age in years
• Nationality (สัญชาติ): Your nationality
• Passport Number / ID Number (เลขที่หนังสือเดินทาง/บัตรประชาชน): For foreigners, use your passport number. For Thai citizens, use the national ID number.
• Address (ที่อยู่): Your current address in Thailand (as registered with immigration)

Medical Declaration Section:

The critical part of the form is a statement that the doctor has examined you and certifies that you are free from the following conditions:

"ข้าพเจ้าได้ตรวจร่างกายผู้ขอใบอนุญาตขับรถแล้ว ปรากฏว่าเป็นผู้ไม่มีโรคประจำตัวหรือสภาพทางร่างกายซึ่งเป็นอุปสรรคต่อการขับรถ ดังต่อไปนี้"

>

("I have examined the driving license applicant and certify that they do not have any disease or physical condition that would be an impediment to driving, as follows:")

The five conditions are then listed (usually in Thai, sometimes bilingual):

1. โรคลมชัก (Epilepsy)
2. โรคหัวใจ (Heart disease)
3. โรคเบาหวานที่มีภาวะแทรกซ้อน (Diabetes with complications)
4. โรคทางจิตหรือความบกพร่องทางสติปัญญา (Mental disorder or cognitive impairment)
5. การติดสุราหรือสารเสพติด (Alcohol or drug dependence)

The doctor checks a box or draws a line through the list to confirm you are free from all five.

Doctor's Information Section:

• Doctor's full name (printed)
• Medical license number (ใบประกอบวิชาชีพเวชกรรม เลขที่...)
• Signature
• Date of examination

Clinic/Hospital Information Section:

• Clinic or hospital stamp (official seal, usually blue or red ink)
• Date stamp (may be separate from the doctor's signature date)

6.2 What the DLT Officer Checks

When you submit your medical certificate at the DLT, the officer will verify:

1. The certificate is the original (not a photocopy)
2. The date is within 30 days
3. Your name matches your passport
4. The doctor has signed (signature present, not digitally inserted or photocopied)
5. The clinic/hospital stamp is present and legible
6. The five disqualifying conditions are addressed (checked off or listed as negative)
7. The certificate is not obviously fraudulent (misspellings, incorrect form, missing stamp)

If any of these checks fail, your certificate will be rejected and you will need to get a new one.

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7. Common Rejection Reasons

Here are the most common reasons medical certificates are rejected at the DLT, based on reports from DLT officers and expat forums:

7.1 Expired Certificate (Most Common)

Certificate dated more than 30 days before the DLT visit. This is the number one rejection reason. Solution: Check the date before leaving the clinic. Count the days. Get a fresh certificate if in doubt.

7.2 Incorrect Name

The name on the certificate does not match your passport exactly. This happens when:

• The clinic uses your nickname instead of your legal name
• A middle name is omitted or included inconsistently
• The name is transliterated differently than your passport
• For Thai citizens: The name on the certificate does not match the name on the national ID card

Solution: Show the clinic staff your passport and ask them to copy the name exactly. Double-check before you leave.

7.3 Missing or Illegible Stamp

The clinic or hospital stamp is missing entirely, or the ink is so faint that the officer cannot verify its authenticity. Solution: Check that the stamp is present and clearly legible before leaving the clinic. A photocopy of a stamped certificate is not acceptable — the stamp impression must be on the original.

7.4 Photocopy Instead of Original

Submitting a photocopy of the medical certificate. The DLT requires the original. Solution: Bring the original certificate. Make a photocopy for your own records if you wish, but submit the original to the DLT.

7.5 Unrecognized Provider

The certificate is from a provider the DLT officer does not recognize or considers illegitimate. This is rare but can happen with:

• Very small, unregistered clinics
• Alternative medicine practitioners (traditional medicine, acupuncture clinics)
• Overseas medical providers (certificates from hospitals outside Thailand are generally not accepted)
• Online "telemedicine" services that are not properly registered

Solution: Use a clinic or hospital that is clearly registered as a medical facility. Look for the medical license displayed on the wall (doctors must display their Medical Council of Thailand registration). If in doubt, use a hospital rather than a clinic — hospitals are universally recognized.

7.6 Incorrect Form

The certificate is on generic letterhead and does not specifically address the five DLT disqualifying conditions. Some doctors write a generic "Mr. Smith is fit to drive" note, which the DLT may reject because it does not confirm freedom from the five specific conditions. Solution: Ensure the clinic uses the DLT-specific form or at minimum lists the five conditions and confirms you are free from them.

7.7 Digital Certificate Without Physical Copy

You arrive with only a digital certificate (PDF on your phone) at a DLT that does not participate in the digital program. Solution: Print the PDF. Bring paper. Digital certificates in the pilot program are transmitted through the ThaID system — a PDF on your phone is not the same thing.

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8. Digital Certificates in 2026: State of Play

The Thai government's push toward digital government services (Thailand 4.0 initiative) has reached the DLT medical certificate process. Here is the current state as of 2026.

8.1 The ThaID Digital Health System

The DLT, in partnership with the Ministry of Public Health, has been rolling out a digital health certification system called ThaID (Thai Digital ID). Under this system:

• Registered hospitals and clinics can transmit medical certificate data directly to the DLT's database
• The applicant's identity is verified through the ThaID app (linked to their national ID or passport number)
• The DLT officer retrieves the certificate from the system using the applicant's ID number — no paper needed
• Data security: The system uses blockchain-like timestamping to prevent tampering and ensures the certificate is genuine

8.2 Current Coverage (July 2026)

Province/Area	ThaID Digital Certificate	Physical Certificate Still Accepted
Bangkok (Chatuchak DLT)	Available (pilot)	Yes
Bangkok (other DLT offices)	Limited rollout	Yes
Chiang Mai	Expected late 2026	Yes
Phuket	Available at select hospitals	Yes
Pattaya (Chonburi)	Available for Thai ID holders only	Yes
Other provinces	Not yet available	Yes

8.3 How to Check If Your DLT Accepts Digital Certificates

1. Open the DLT Smart Queue app
2. Select your DLT office and service type
3. During the booking process, the app will indicate if digital medical certificates are accepted at that office
4. Alternatively, call the DLT hotline (1584) and ask: "Rap bai raprong paed digital dai mai?" (Do you accept digital medical certificates?)

8.4 Practical Advice for 2026

For the safest approach: Get a physical paper certificate. It works everywhere. The digital system is promising but not yet universal.

For early adopters: If you are going to Bangkok Chatuchak DLT and your hospital participates in ThaID, you can try the digital-only route. Confirm with the hospital that your certificate has been successfully transmitted before your DLT appointment. But bring a physical backup if you want to be absolutely safe.

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9. Special Cases

9.1 Age 70 and Over

Applicants aged 70 and over face slightly different requirements:

• The DLT may require a more detailed medical certificate from a hospital rather than a clinic
• Some DLT officers ask older applicants to undergo additional physical tests beyond the standard four
• The renewal period for licenses held by drivers over 70 may be shortened (though this is not consistently enforced)
• A certificate of fitness from a specialist (cardiologist, neurologist) may be requested if the examining doctor has concerns

There is no official rule that over-70s cannot drive in Thailand. But the medical scrutiny increases, and DLT officers have discretion to require additional documentation.

9.2 Pregnancy

Pregnancy is not a disqualifying condition for a driving license, and the medical certificate process does not test for pregnancy. However:

• If you are visibly pregnant, some DLT officers may ask additional questions
• The physical reaction test (depth perception, reaction time) may be affected by pregnancy-related fatigue or physical discomfort
• If you have pregnancy complications (gestational diabetes, pre-eclampsia), these should be disclosed to the examining doctor, who will assess fitness to drive
• There is no DLT rule prohibiting pregnant women from taking the driving test or holding a license

9.3 Temporary Conditions

Temporary conditions that impair driving ability:

• Broken arm or leg (in a cast): You will not pass the practical test, but you can still apply and take the written test. The medical certificate will note the temporary impairment, but the doctor cannot certify you as fit for the practical test if you cannot operate the vehicle controls.
• Recent surgery: If you are within the recovery period and your surgeon has advised against driving, the doctor will not sign the certificate.
• Acute illness (flu, COVID-19, severe infection): If you are acutely unwell, the doctor may defer the certificate until you recover. This is for your safety and the safety of others at the DLT.

If you have a temporary condition, the best approach is to wait until you have fully recovered before applying for or renewing your license.

9.4 Foreigners with Pre-Existing Conditions

If you have a medical condition that falls into one of the five disqualifying categories but is well-managed and stable:

1. See a specialist (cardiologist, neurologist, psychiatrist, endocrinologist) before visiting the clinic
2. Get a detailed letter from the specialist stating:

- Diagnosis and date

- Current treatment

- Stability of the condition

- The specialist's opinion on your fitness to drive

1. Bring the specialist's letter, your medication list, and any relevant test results to the clinic
2. The clinic doctor will review the specialist's documentation and make the final certification

A well-prepared applicant with proper documentation is far more likely to receive a positive certification than someone who simply declares a condition without supporting evidence.

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10. Cost and Payment

10.1 Typical Costs by Provider Type

Provider Type	Cost Range (THB)	Typical Cost (THB)
Small private clinic near DLT	100 - 200	150
Private clinic (city center)	150 - 300	200
Government hospital (outpatient)	50 - 150	100
Private hospital	300 - 1,000+	500

10.2 What You Are Paying For

The fee covers:

• Doctor's consultation time (5-10 minutes)
• Blood pressure measurement
• Certificate form completion and stamp
• Clinic administrative overhead

It does not cover any laboratory tests, imaging, or specialist referrals. If the doctor determines that you need additional tests (ECG, blood work, etc.), those will be billed separately.

10.3 Payment Methods

• Cash: Universally accepted. Bring small bills (100 THB notes).
• QR code / Thai bank app: Accepted at most clinics and all hospitals.
• Credit cards: Usually accepted at private hospitals. Generally not accepted at small clinics.
• International cards: Accepted at large private hospitals (Bangkok Hospital, Samitivej, Bumrungrad, etc.), but smaller hospitals and clinics are cash or Thai bank transfer only.

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11. Sample Medical Certificate Form (English Translation)

Below is an English translation of the typical DLT medical certificate form. The actual form will be in Thai. Some clinics provide a bilingual version.

```

MEDICAL CERTIFICATE

(For Driving License Application)

This is to certify that I have examined:

Name: ________________________________

Age: ________ years

Nationality: __________________________

Passport/ID Number: __________________

Address: ______________________________

and I hereby certify that the above-named person is NOT suffering from

any of the following conditions that would impede their ability to

drive a motor vehicle safely:

[ ] 1. Epilepsy

[ ] 2. Heart disease

[ ] 3. Diabetes with complications

[ ] 4. Mental disorder or cognitive impairment

[ ] 5. Alcohol or drug dependence

In my professional opinion, the above-named person is medically fit to

operate a motor vehicle.

Doctor's Name: ________________________

Medical License No.: __________________

Signature: ____________________________

Date: ________________________________

Clinic/Hospital Stamp:

[OFFICIAL STAMP HERE]

```

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12. Frequently Asked Questions

Can I use the same medical certificate for both car and motorcycle licenses?

Yes. If you are applying for both a car and motorcycle license on the same day, one medical certificate covers both. The DLT officer will note it on both applications.

Can I get a medical certificate at the DLT itself?

Some large DLT offices (Bangkok Chatuchak) have a small medical clinic or a visiting nurse on the premises. However, this is not guaranteed. Do not count on getting your medical certificate at the DLT. Get it beforehand.

Is a medical certificate from my home country accepted?

Generally no. The DLT requires a certificate from a Thai-licensed medical practitioner. A certificate from your home country, even if translated and notarized, will likely be rejected. The reasoning is that the DLT cannot verify the credentials of a foreign doctor.

Can I drive immediately after passing the medical test?

The medical certificate is a document for the DLT, not a license to drive. You still need to take and pass the DLT tests and receive your license. You cannot drive legally with just a medical certificate.

What if I am on medication that could affect driving?

Disclose this to the examining doctor. The doctor will assess whether the medication, at your current dosage, impairs your ability to drive. If the doctor determines that it does not, they will sign the certificate. If they have concerns, they may add a notation (e.g., "Patient should not drive within 2 hours of taking this medication") or, in rare cases, refuse to sign.

Do I need to fast before the medical examination?

No. There is no fasting requirement. The examination does not include blood tests. Eat and drink normally.

Can a dentist or nurse sign the medical certificate?

No. Only a licensed medical doctor (physician) can sign the DLT medical certificate. Dentists, nurses, pharmacists, and other healthcare professionals are not authorized to issue driving license medical certificates in Thailand.

My medical certificate was rejected because the doctor wrote "no obvious abnormality" instead of listing the five conditions. What should I do?

Go back to the clinic and ask them to use the DLT-specific form. If they refuse, go to a different clinic that uses the standard form. Generic "fit to drive" notes, no matter how authoritative, do not satisfy the DLT's requirement.

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Conclusion

The medical certificate is one of the simplest parts of the Thai driving license process — but only if you handle it correctly. The key points:

1. Get it from a recognized clinic or hospital near your DLT office
2. Ensure it uses the DLT-specific form that addresses the five disqualifying conditions
3. Check the date — must be within 30 days of your DLT visit
4. Check your name — must match your passport exactly
5. Check the stamp and signature — both must be present and legible
6. Bring the original — photocopies are not accepted
7. Get it 3-7 days before your DLT appointment (not months in advance, not the morning of)

For the vast majority of people, the medical certificate is a 5-minute, 150 THB formality. But skipping it, bringing an expired one, or arriving with an incorrectly completed certificate will derail your entire DLT visit. Get it right, and move on to the real challenge: the written and practical tests.

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