What Blood Pressure Do You Need to Pass a DOT Physical?
Here's the short answer: under FMCSA's Medical Advisory Criteria, a reading below 140/90 sits outside the hypertension stages. Stage 1 and Stage 2 readings (140–179 systolic and/or 90–109 diastolic) don't automatically disqualify a driver — the criteria provide shorter certification periods for them. At or greater than 180 systolic and 110 diastolic, the criteria provide that an individual should not be qualified until the reading is reduced to 140/90 or less and treatment is well tolerated.
That's the bottom line. But if you're a commercial driver who's ever been told your blood pressure is "a little high," you know the details matter. Getting the right information — before you walk into that exam room — can mean the difference between leaving with your medical card in hand or scrambling to reschedule.
I've been examining commercial drivers for over 40 years. I've seen drivers panic over numbers that were completely manageable, and I've seen drivers get caught off guard by numbers they had no idea were elevated. This guide is written to help you walk into your DOT physical prepared, calm, and confident — no matter what your blood pressure looks like today.
Why Blood Pressure Matters So Much at a CDL Physical
The FMCSA requires blood pressure screening at every DOT physical because hypertension is directly linked to cardiovascular events — stroke, heart attack, sudden incapacitation — that can happen behind the wheel. When you're operating a 40-ton vehicle, the safety stakes extend far beyond yourself.
That said, the FMCSA doesn't take a one-size-fits-all approach. FMCSA's Medical Advisory Criteria, which are advisory guidance for medical examiners, recognize that blood pressure exists on a spectrum, and describe a 3-stage certification system that accounts for borderline readings, medication management, and clinical context. Understanding that system is what this post is all about.
For a full overview of what's covered during the exam itself, see our Complete CDL Driver's Guide to the DOT Physical Exam.
The FMCSA 3-Stage Blood Pressure Certification System
Stage 1: Blood Pressure 140–159/90–99 — One-Year Medical Card
When a reading falls in this range on exam day, the criteria provide for certification for one year rather than the two-year maximum.
What this means for you:
- Where the examiner certifies you, the card is issued the same day.
- The criteria provide for a one-year certification period rather than 24 months.
- At later exams the criteria recommend continuing annual certification, with a target at or below 140/90.
- If it is still in the Stage 1 range at renewal, the criteria provide for a further one-year certification.
What you should do: Talk to your primary care doctor about the reading. Stage 1 is a yellow flag, not a stop sign. Lifestyle changes or medication can bring the reading down; the criteria then recommend annual examinations with a target at or below 140/90.
Stage 2: Blood Pressure 160–179/100–109 — 3-Month Temporary Certificate
This is where a lot of drivers get tripped up — not because they're disqualified, but because they don't understand what the 3-month certificate means or what they need to do with it.
What happens at the exam:
- The criteria provide for a one-time certification of three months, sometimes called a temporary card.
- The three-month certificate lets a driver keep driving commercially until it expires.
- It is a certification, not a disqualification.
What you must do within 90 days:
- See your treating physician and get your blood pressure under control — ideally below 140/90.
- Return to a certified medical examiner (like OneCare CDL) for a follow-up exam.
- Where the reading is back in a qualifying range and treatment is well tolerated, the criteria provide for certification for one year.
- If the reading is still in the Stage 2 range or higher at the follow-up, the criteria do not provide a second three-month certification.
The critical thing to understand: The 3-month certificate is not a grace period to ignore — it's an active assignment. You need to work with your doctor, get on a treatment plan, and come back. Where treatment is well tolerated and the reading is 140/90 or less at the follow-up, the criteria provide for certification for one year. Drivers who don't can find themselves without a valid medical card 90 days later.
Stage 3: At or Greater Than 180 Systolic and 110 Diastolic — Disqualification Until Controlled
The Medical Advisory Criteria describe Stage 3 as a blood pressure at or greater than 180 systolic and 110 diastolic, and provide that an individual should not be qualified, even for a short period, until the reading is reduced to 140/90 or less and treatment is well tolerated. A reading that sits above the Stage 2 range but meets only one of the two Stage 3 numbers is not squarely addressed by the criteria, and your examiner makes that determination in person against the full clinical picture.
What this means:
- No medical card is issued.
- The driver may not operate a commercial motor vehicle until recertified.
- You must work with your treating physician to bring your blood pressure into a certifiable range before returning for another exam.
This is not the end of the road. I've worked with many drivers who came in at Stage 3 and got on an effective treatment plan; once the reading is 140/90 or less and treatment is well tolerated, the criteria provide for certification for six months at a time. The key is getting to your doctor quickly and being honest with your examiner about your medication history.
Speaking of medications — if you're taking blood pressure medication, read our DOT Physical Medications & Driver Disclosure Guide before your exam. You'll need to bring documentation, and the type of medication matters.
White-Coat Hypertension: When Nerves Drive the Numbers Up
One of the most common things I see in my exam room is a driver whose blood pressure is genuinely normal at home — but spikes when they sit down for their DOT physical. This is called white-coat hypertension, and it's real, it's common, and it can affect your results.
Signs you may be dealing with white-coat hypertension:
- Your at-home readings are consistently normal (under 120/80).
- Your reading at prior exams was elevated, but you felt fine.
- You feel noticeably anxious before or during the exam.
What you can do:
- Arrive 15–20 minutes early and sit quietly before your exam.
- Avoid caffeine for at least an hour before the exam.
- Skip strenuous exercise the morning of your exam.
- Take slow, relaxed breaths while the cuff is on — don't hold your breath or tense your arm.
- Let your examiner know if you have a history of white-coat hypertension. A good examiner will take multiple readings and consider context.
I always take the clinical picture into account. If a driver tells me they consistently measure 118/76 at home and shows up at 152/94, that's a very different conversation than a driver who hasn't checked their blood pressure in two years.
Medication Compliance: What You Need to Know
Blood pressure controlled with medication does not, on its own, rule out certification — but there are rules.
- Bring documentation. Bring your prescription bottles or a letter from your treating physician listing your medications and dosages.
- Take your medication as prescribed on exam day. Do not skip a dose thinking it will affect the exam one way or another — it won't help, and missing doses can cause a rebound spike.
- Some medications require additional evaluation. Certain beta-blockers and diuretics can affect other parts of the exam (heart rate, vision, urine). Your examiner needs to know what you're taking.
- Your medication must be stable. If you just started a new blood pressure medication or your doctor recently changed your dosage, it may be worth waiting 4–6 weeks before your exam to allow the medication to stabilize.
For more detail on how medications are handled during DOT physicals, see our dedicated post: DOT Physical Medications: CDL Driver Disclosure Guide.
How to Lower Blood Pressure Before Your DOT Physical
If your exam is coming up and you know your blood pressure has been running high, here's what actually works in the short and medium term:
In the days leading up to your exam:
- Reduce sodium intake — cut back on processed foods, fast food, and added salt.
- Limit or eliminate alcohol for at least 48 hours before the exam.
- Stay well hydrated with water.
- Get adequate sleep the night before.
- Avoid caffeine the morning of the exam.
Longer-term (if your exam is 4+ weeks out):
- Start regular aerobic exercise — even 30 minutes of walking most days can meaningfully lower blood pressure over time.
- Talk to your doctor about whether medication is appropriate for your situation.
- Monitor your blood pressure at home with a cuff and keep a log to bring to the exam.
What doesn't work: trying to white-knuckle your way through a Stage 2 or Stage 3 reading with one night of good sleep. If your blood pressure has been consistently elevated, you need a treatment plan — not a crash preparation strategy.
Ready for Your DOT Physical? Here's What to Bring
- Photo ID and your current CDL
- List of all medications (or prescription bottles)
- Glasses or contacts if you use them for distance vision
- Any relevant medical records (prior heart conditions, diabetes, sleep apnea treatment, etc.)
- Your home blood pressure log if you've been monitoring
For a full prep checklist, see our post: How to Pass Your DOT Physical: Tips from an FMCSA-Certified Examiner.
Schedule Your DOT Physical at OneCare CDL in Daytona Beach
At OneCare CDL, we specialize exclusively in CDL examinations and DOT compliance services. Dr. David Jacobsen has been certifying commercial drivers for over 40 years, and we understand that your medical card is your livelihood — not just a piece of paperwork.
We issue same-day medical cards for drivers who meet all FMCSA requirements, and we take the time to explain your results and your options clearly — especially if your blood pressure puts you in a borderline stage.
We are appointment-based, so you'll never wait in line behind a crowd of general patients. Your time on the road is valuable, and we treat it that way.
Ready to get your DOT physical handled right?
Book your CDL physical exam online or call us at (386) 226-0011 to schedule.
You can also explore all of our CDL physical exam services here.
OneCare CDL is an FMCSA-registered medical examination center in Daytona Beach, FL, specializing in DOT physicals, CDL examinations, and driver health compliance.
