What Does a DOT Medical Exam Consist Of?

A DOT medical exam consists of a medical history review, a set of vital-sign measurements, a head-to-toe physical evaluation, vision and hearing tests, and a urinalysis, all performed by a medical examiner listed on the FMCSA National Registry to decide whether you are physically, mentally, and emotionally fit to operate a commercial motor vehicle. The examiner works from the Medical Examination Report Form (MCSA-5875) and, if you pass, issues a Medical Examiner’s Certificate that is typically valid for up to two years.

The Medical History Review

The exam opens with paperwork, not a stethoscope. You fill out the medical history section of Form MCSA-5875, listing past surgeries, chronic conditions, hospitalizations, and every medication you take, including over-the-counter drugs.1Federal Motor Carrier Safety Administration. Medical Examination Report Form MCSA-5875 The examiner reads through your answers and asks follow-up questions about anything that could affect safe driving. This is also where you disclose devices you rely on, such as a CPAP machine for sleep apnea or a glucometer for insulin-treated diabetes.

You can download the form ahead of time and review it so you’re not trying to recall surgical dates or medication names on the spot. Being able to name your prescribing doctors and dosages accurately keeps this stage short.

Vitals and the Physical Evaluation

After the history review, the examiner records your height, weight, pulse rate, and blood pressure. From there, the physical works through the body in order: eyes, ears, mouth, throat, heart, lungs, abdomen, and vascular system. The examiner checks for hernias, evaluates your extremities and spine, and tests neurological function including reflexes and how you walk.

The physical is not invasive and doesn’t take long, but it is thorough. Anything the examiner notices — a heart murmur, a limited range of motion, a tremor — can lead to follow-up questions or a request for records from your treating clinician before a certificate is issued.

Vision and Hearing Tests

Vision testing checks four things against federal standards: at least 20/40 acuity in each eye (with or without corrective lenses), at least 20/40 binocular acuity, a horizontal field of vision of at least 70 degrees in each eye, and the ability to distinguish standard red, green, and amber traffic signal colors.2eCFR. 49 CFR 391.41 – Physical Qualifications for Drivers Bring your glasses or contacts if you use them for driving; the examiner tests you the way you actually drive.

Hearing is checked with a forced-whisper test: you must be able to hear a forced whisper from at least five feet away in your better ear, with or without a hearing aid. If you don’t pass that, the examiner can use an audiometric test as a backup, which must show no more than 40 decibels of average hearing loss in your better ear at 500 Hz, 1,000 Hz, and 2,000 Hz.3Federal Motor Carrier Safety Administration. What Are the Hearing Requirements for CMV Drivers?

Blood Pressure and What It Decides

Blood pressure gets its own attention because the reading directly controls how long your certificate lasts. The FMCSA uses a three-stage system:

  • Below 140/90: you qualify for the full two-year certificate.
  • Stage 1 (140–159 / 90–99): one-year certificate; you recertify annually.
  • Stage 2 (160–179 / 100–109): a one-time, three-month temporary certificate. If you bring your blood pressure below 140/90 within those three months, you can receive a one-year certificate.
  • Stage 3 (above 180/110): disqualified. You cannot drive until your blood pressure drops below 140/90, at which point certification runs at six-month intervals.4Federal Motor Carrier Safety Administration. What Is the Effect on Driver Certification Based on FMCSA Hypertension Stages?

The practical takeaway: if your blood pressure runs high, get it under control before the exam. A reading of 141/91 on exam day means you lose a full year of certification. A reading above 180/110 means you walk out without a card at all.

The Urinalysis

A urinalysis is required at every DOT physical. The examiner tests your urine for sugar, protein, blood, and specific gravity. Sugar in the urine can signal undiagnosed diabetes, protein or blood may indicate kidney problems, and specific gravity measures hydration. This is not a drug screen. Employer-required drug testing is a separate process governed by different regulations.5Federal Motor Carrier Safety Administration. Medical Examination Report for Commercial Driver Fitness Determination

Conditions and Medications the Examiner Asks About

Beyond the physical checks, the examiner assesses specific conditions the federal standards single out. Any of the following can affect certification:

  • Loss or impairment of a foot, leg, hand, or arm that interferes with commercial driving.
  • Insulin-treated diabetes, which requires at least three months of electronic blood glucose self-monitoring records and a recent HbA1c measurement.6Federal Motor Carrier Safety Administration. Insulin-Treated Diabetes Mellitus Assessment Form MCSA-5870
  • Cardiovascular disease, including heart attack, angina, coronary insufficiency, blood clots, or any condition known to cause fainting, shortness of breath, collapse, or heart failure.
  • Epilepsy or seizure disorders. Drivers with a history of epilepsy may qualify after 10 years seizure-free and off medication; a single unprovoked seizure requires five years seizure-free and off medication.7FMCSA National Registry of Certified Medical Examiners. Attention Certified Medical Examiners – Seizure Information
  • Respiratory dysfunction likely to interfere with safe driving.
  • Mental, nervous, or psychiatric conditions likely to interfere with safe driving.2eCFR. 49 CFR 391.41 – Physical Qualifications for Drivers

Sleep apnea comes up often. There’s no standalone federal sleep apnea regulation, but moderate-to-severe sleep apnea that interferes with safe driving is disqualifying under the general loss-of-consciousness standard. Once treatment is working, certification can be regained. If you use a CPAP, bring your compliance data so the examiner can see you’re using the device consistently.8Federal Motor Carrier Safety Administration. Driving When You Have Sleep Apnea

Medications get their own scrutiny. Any Schedule I controlled substance makes you medically unqualified, as does any amphetamine, narcotic, or habit-forming drug used without a valid prescription. Anti-seizure medications taken to prevent seizures are disqualifying. For other prescriptions, the examiner may contact your prescribing doctor to confirm you can safely drive while taking them.9Federal Motor Carrier Safety Administration. What Medications Disqualify a CMV Driver? Marijuana remains off-limits for commercial drivers under federal rules, even in states where recreational or medical use is legal. DOT drug testing rules have not changed despite the December 2025 executive order directing rescheduling from Schedule I to Schedule III.10FMCSA Drug and Alcohol Clearinghouse. In Case You Missed It – Updates from ODAPC

What You Leave With

If the examiner determines you’re physically qualified, you receive a Medical Examiner’s Certificate on Form MCSA-5876, commonly called a DOT medical card.11Federal Motor Carrier Safety Administration. About the Medical Examiners Certificate MEC Form MCSA-5876 The standard card is valid for two years. Shorter periods apply for specific conditions:

  • One year for Stage 1 hypertension, heart disease, insulin-treated diabetes under the exemption program, and vision waivers.
  • A one-time three-month card for Stage 2 hypertension, six-month intervals for Stage 3 brought under control, and other conditions the examiner determines require closer monitoring.12Federal Motor Carrier Safety Administration. For How Long Is My Medical Certificate Valid?

Drivers with insulin-treated diabetes who can’t yet provide three months of electronic blood glucose records may receive a certificate good for no more than three months while they build that monitoring history.6Federal Motor Carrier Safety Administration. Insulin-Treated Diabetes Mellitus Assessment Form MCSA-5870

What to Bring to the Exam

Walking in prepared shortens the visit and avoids unnecessary delays. Gather these before your appointment:

  • A valid government-issued photo ID such as your driver’s license.
  • A complete list of medications, including over-the-counter drugs, with dosages and prescribing doctors.
  • Documentation of past surgeries, chronic conditions, and recent illnesses from your doctors and specialists.
  • Glasses, contact lenses, or hearing aids if you use them for driving.
  • At least three months of electronic blood glucose self-monitoring records and a recent HbA1c result if you use insulin.6Federal Motor Carrier Safety Administration. Insulin-Treated Diabetes Mellitus Assessment Form MCSA-5870
  • CPAP compliance data if you’re being treated for sleep apnea.
  • Letters from specialists confirming your fitness to drive if you have a heart condition, neurological disorder, or other condition that required specialist care.

Confirm your examiner is listed on the FMCSA National Registry before you book. The National Registry has a searchable database of certified examiners.13FMCSA National Registry of Certified Medical Examiners. National Registry of Certified Medical Examiners The exam itself is paid out of pocket by you or your employer; most drivers pay between $75 and $200, with any additional testing the examiner orders — a sleep study, an audiometric test, or a specialist consult — billed separately.