Blood Pressure Lab Practice Test

Calibration keeps readings accurate by aligning the device to a known pressure standard, preventing drift in components like the cuff, valve, or gauge over time. The best process is regular calibration against a standard reference, with an accuracy check within a tight tolerance (±2 mmHg) and performed by qualified service personnel, with the calibration dates and results documented.

This approach ensures traceability to a recognized standard, maintains clinically reliable accuracy, and provides a maintenance log for accountability. Calibrating by the patient is inappropriate, and claiming no calibration is required ignores drift over time. Using a standard without keeping documented dates and accepting a looser tolerance (±5 mmHg) reduces reliability and traceability.