BiometricsReported in mmHgDiastolic blood pressure
The bottom number of a blood pressure reading. It is the pressure when the heart is resting between beats.
What it measures
Diastolic pressure is the lower number, measured in the same cuff reading as systolic pressure. It reflects the resistance in the smaller arteries while the heart fills. You enter it yourself, ideally from a seated, rested measurement.
Why it is on the panel
Diastolic pressure used to be the number everyone quoted. Systolic pressure gets more attention now, but a high diastolic number still marks extra strain on the arteries, especially in younger adults.
How to read it
Adult guidelines generally treat diastolic pressure under 80 mmHg as the expected range, 80–89 as stage 1 territory, and 90 or higher as a clearer elevation. Always read it with the systolic number from the same sitting.
When it runs higher
Hypertension, stress, pain, and a poorly fitting cuff raise it. A diastolic number that stays at 90 mmHg or higher on repeat readings is a reason to talk with a clinician, even when you feel fine.
When it runs lower
A diastolic number in the 60s can be perfectly healthy. Lower readings matter when they come with lightheadedness, or when the gap between systolic and diastolic becomes very wide in an older adult.
Same group
Other Biometrics tests
How to use this page
This page explains what the measurement is for. It is educational. Your Healiam report includes the reference interval for your age and sex, and a clinician reads that result with your history, medicines, and the rest of the panel. Talk with a clinician before changing diet, supplements, or treatment because of a number on a report.
Diastolic pressure
Diastolic pressure is part of the full panel.
No referral or insurance required.
One preventive draw covers this measurement and the rest of the Healiam panel. CLIA-certified results come back in days.