Blood Pressure and Your DOT Physical

Blood pressure is the number one reason drivers walk out with a short certificate instead of a two year one. The thresholds are federal and the examiner has almost no discretion, so it is worth knowing exactly where the lines are.

The thresholds

Under 140/90. You qualify for the full 2 year certificate, assuming everything else checks out.

140 to 159 systolic, or 90 to 99 diastolic. Stage 1. You get a 1 year certificate. At the next exam, if you are under 140/90, you go back to a 1 year certificate. FMCSA does not send stage 1 drivers back to 2 years automatically, so plan on annual exams once you land here.

160 to 179 systolic, or 100 to 109 diastolic. Stage 2. You get a one time 3 month certificate. Use those three months to get it under 140/90. If you do, the examiner can issue a 1 year certificate. This 3 month card is issued once, not repeatedly.

180 systolic or higher, or 110 diastolic or higher. Stage 3. Disqualified. Not permanently. Once treatment brings you to 140/90 or below, you can be certified for 6 months, and then recertified every 6 months as long as you stay controlled.

The examiner takes the higher classification. 138 over 96 is stage 1, not normal.

What the examiner will do if the first reading is high

Most examiners will let you sit quietly for five to ten minutes and retake it. Many will take it in both arms. Some will let you come back the same week for a recheck before issuing the certificate. None of this is guaranteed, so ask politely rather than assuming.

If you have a home cuff and a log showing consistently normal readings, bring it. It will not override the reading in the office, but it can convince an examiner to recheck rather than certify on one number.

The week before your appointment

None of this is medical advice, and none of it substitutes for treating actual hypertension. It is about not sabotaging an otherwise fine reading.

• Take your blood pressure medication. Drivers skip it before the exam thinking it is a drug test. It is not. Skipping is the single worst thing you can do.
• Cut sodium hard for several days. Truck stop food is the main driver of the number for most people in this job. Jerky, canned soup, fast food and deli meat are the biggest offenders.
• Sleep. A short night raises readings meaningfully. Do not book the exam after a 600 mile overnight run.
• No caffeine or nicotine for at least an hour before, ideally longer. Both spike readings for 30 to 60 minutes.
• Empty your bladder before the reading. A full bladder adds several points.
• Book a mid-morning appointment. Blood pressure tends to run highest first thing and after a long day.

During the reading

Sit with your back supported, feet flat on the floor, arm at heart level, and do not talk. Talking during a measurement raises it. Crossed legs raise it. An arm hanging at your side raises it. A cuff over a shirtsleeve raises it. If the cuff looks small for your arm, say so, because an undersized cuff on a large arm reads high, and that is a real and common problem in this line of work.

White coat hypertension is a real thing and it is still your reading

Plenty of drivers run normal at home and high in a clinic. The examiner still has to certify based on what they measure. If this is you, the practical path is to work with your regular doctor on treatment, bring documentation of your home readings, and give yourself a recheck window rather than showing up the week your card expires.

The bigger picture

Getting a 3 month card is not a career problem. Ignoring the number is. Hypertension is the most common medical condition in this profession, it is treatable, and treatment does not disqualify you. Being on blood pressure medication is completely compatible with a 2 year certificate.

Find a certified examiner near you, and read the full requirements before you go.