A cuff that is too small or too large can affect a reading.
Why it matters
Measure the midpoint of your bare upper arm and compare it with the cuff range printed by the manufacturer.
A practical routine
- Measure the upper arm instead of guessing by clothing size.
- Place the cuff on bare skin as the instructions describe.
- Ask a clinician to check the fit if your arm is near the end of the stated range.
Make the record useful
Use a correctly fitted upper-arm cuff, sit quietly with supported posture, and record paired readings when recommended. Add a short note when illness, pain, poor sleep, stress, exercise, meals, or medication timing adds context.
Related: Explore the iHealth Track monitor.
General education only; not medical advice, diagnosis, or treatment.