How To Prepare for a DOT Medical Exam

Learn how to pass your next Department of Transportation physical exam

A woman in a red sweater has her blood pressure checked by a female doctor.

Key Takeaways

  • A Department of Transportation (DOT) physical is a fitness-for-duty exam required by the FMCSA for most commercial motor vehicle drivers and results in a medical certificate valid for up to 24 months.
  • DOT medical exams must be completed by a DOT-certified medical examiner listed on the FMCSA National Registry.
  • The exam checks vision, hearing and overall health, with extra attention paid to conditions like high blood pressure and sleep apnea.
  • Drivers can improve their odds of passing a DOT medical exam ahead of the appointment by gathering key documents, addressing health concerns and building healthy habits.

DOT Medical Exam Frequently Asked Questions

Keeping your rig in top shape is job number one for professional drivers. Equally important, however, is preparing your mind and body for the daily rigors of truck driving.

A Department of Transportation (DOT) physical exam is designed to assess your readiness and ensure you’re roadworthy physically and mentally. Let’s look at what it is, who needs to take one and how to prepare for your exam.


What is a DOT medical exam?

A DOT medical exam is mandated by the Federal Motor Carrier Safety Administration (FMCSA) for most over-the-road truck drivers. It’s a fitness-for-duty test. Drivers who pass their DOT physical receive a Medical Examiner’s Certificate, also called a DOT medical card. Certificates are valid for up to 24 months depending on underlying medical concerns.

A medical examiner may issue a certificate for a shorter period, however, if they want to monitor an ongoing health condition such as high blood pressure, sleep apnea, diabetes or something else.

All DOT physicals must be conducted by a certified medical examiner listed on the FMCSA National Registry. The registry includes medical doctors, osteopathic doctors, physician assistants, advanced practice nurses and chiropractors.

Who needs a DOT medical card?

Any commercial motor vehicle (CMV) driver who crosses state lines needs a DOT medical card if the vehicle they drive:

  • Has a gross vehicle weight rating (GVWR) or gross combination weight rating of 10,001 pounds or more
  • Transports more than 8 passengers for compensation
  • Transports more than 15 passengers not for compensation
  • Carries hazardous materials that require placards
These federal rules apply whether or not the driver holds a commercial driver’s license (CDL). Some states also require professional drivers to undergo a DOT physical if they operate CMVs within state lines.

If I have an annual physical, do I still need a DOT medical exam?

Yes. Annual checkups and DOT medical exams are two different types of doctor’s visits. An annual physical evaluates your overall health and wellness. The DOT medical exam checks for specific health risks that determine whether you meet the specific occupational health standards required to drive a CMV.

Health conditions that may disqualify you from driving a truck include significant hearing loss or vision loss, epilepsy, certain heart conditions, severe high blood pressure, and addiction to drugs or alcohol.

What happens during a DOT physical?

A DOT medical exam takes between 30 and 45 minutes. Typical out-of-pocket costs range from $50 to $200.

To start the exam, your medical examiner will ask you to fill out a yes-or-no questionnaire asking about 32 health conditions. If you answer “no” to any of the questions, you must also include a written explanation.

Next, your examiner will perform a thorough physical exam. This will include checks of your height and weight, pulse, blood pressure, skin, mouth and throat, chest and abdomen, pelvis, back and spine, joints and reflexes, gait and vascular system.

A certified medical examiner will also conduct vision and hearing checks.

  • The vision test will check your field of vision, clarity, and your ability to see red, green, and amber traffic light colors. You may wear your glasses or contact lenses during the exam if you use them regularly.
  • The hearing test will be conducted using either a forced-whisper test (during which someone whispers words while standing behind you) or audiometric testing (during which the driver is asked to identify sounds at different frequencies). You may wear hearing aids during the exam if you use them regularly.

A DOT medical exam does not include a drug test. However, you will also be asked to provide a urine sample. Your medical examiner will check the sample for four signs that indicate how well your kidneys are functioning: specific gravity, protein, blood and blood sugar.


Special Considerations: Blood Pressure and Sleep Apnea

During your DOT physical, a medical examiner will look for signs of uncontrolled blood pressure or sleep apnea. High blood pressure raises the risk for cardiovascular disease, which affects roughly half of all truck drivers. FMCSA has set these blood pressure guidelines for DOT medical exams.

If your blood pressure is: You can:
Under 140/90 mmHg Receive a 2-year certification
140-159/90-99 mmHg Receive a 1-year certification
160-179/100-109 mmHg Receive a 3-month certification; must initiate treatment
180/110 mmHg or higher Disqualified until blood pressure is down to 140/90

Sleep apnea, which occurs when someone stops breathing repeatedly during sleep, is linked to increased driver fatigue. If you’ve been diagnosed with sleep apnea and use a continuous positive airway pressure (CPAP) machine, your medical examiner will ask you to bring a report showing you’ve used the machine regularly over the last 90 days.

How To Prepare for (and Pass) a DOT Medical Exam

Drivers who take time to prepare for their DOT medical exam have the best odds of receiving their medical certificate. Start by gathering all the items you’ll need to bring to your exam, including:

  • A list of all medications, including dosages and prescribing doctor(s)
  • Glasses, contact lenses or hearing aids if you use them
  • Paperwork related to health conditions such as sleep apnea, diabetes or heart disease
In the weeks leading up to your exam, prioritize getting enough sleep, eating healthy meals, hydrating and staying active. On the day of your appointment, take all medications as prescribed. Avoid smoking, salty foods, caffeine or sugary drinks prior to the exam.

Stay in top driving shape all year long. Follow these 5 tips to improve your overall health from a certified FMCSA medical examiner.

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