Measurement Guides
How to take your blood pressure correctly — every time.
Getting accurate blood pressure readings at home is less about the device and more about the technique. The same monitor can give dramatically different results depending on how it’s used. These guides walk you through every step of the measurement process — from preparation and posture to cuff placement and timing — so you can build a routine that produces consistent, reliable results.
The Correct Way to Measure Blood Pressure at Home
Before You Measure
Sit quietly for at least 5 minutes before taking your reading. Avoid caffeine, exercise, and smoking for at least 30 minutes beforehand. Empty your bladder if needed — a full bladder can raise your reading. Avoid talking during the measurement. Take readings at the same time each day for the most useful comparisons (morning before medication, and/or evening).
Posture and Position
Sit with your back supported (not hunched forward). Keep both feet flat on the floor — do not cross your legs. Rest your arm on a flat surface at heart level. This is the most commonly skipped step — if your arm is below or above heart level, your reading can be off by 2–8 mmHg. Use a table or armrest to keep your arm supported and level.
Cuff Placement
Place the cuff directly on bare skin — not over clothing. Position the bottom edge of the cuff approximately 2 cm (about one finger-width) above the bend of your elbow. The cuff tubing or artery marker should be aligned with the inside of your elbow (where you feel your pulse). The cuff should be snug but not tight — you should be able to slip two fingers underneath it. A cuff that is too loose will give a falsely high reading; too tight can give a falsely low one.
Multiple Readings
Take two or three readings, waiting 1–2 minutes between each. Use the average of the second and third readings — the first reading is often higher due to the stress of measurement. Discard the first reading unless it is your only one. If you consistently see a large difference (more than 5 mmHg) between successive readings, discuss this with your doctor.
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