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A visit can appear scheduled while the equipment needed for a valid assessment is unavailable or outside its approved status. Readiness should connect the protocol procedure to the actual instrument, trained user and contingency.
Map instruments to assessments
Create an equipment matrix covering model, identifier, location, maintenance and calibration status as applicable. Determine whether the intended measurement requires particular performance characteristics. Avoid assuming that a generic calibration certificate establishes suitability for every protocol procedure.
Prepare the actual instrument
For an assessment using a study scale, verify the approved setup, current status, accessories and operator preparation before the participant arrives. If an instrument is replaced, assess comparability and record the decision. Preserve affected measurement identifiers if a later fault is discovered.
Visit equipment checks
- Confirm the instrument identifier and current service evidence.
- Check consumables, power, connectivity and trained cover.
- Define the response to failure without improvising protocol procedures.
Assess failures and affected results
Accept visit readiness when the required assessment can be performed under the approved arrangements. Route failures and potentially affected results for study-specific assessment. Calibration intervals and acceptance limits should follow applicable instructions and justified procedures, not a universal schedule invented for every study. Match certificates to the actual serial number; a current certificate for another instrument cannot support the assessment performed with the study device.
Frequently asked questions
- Is calibration the same as maintenance?
- No. Their purposes differ; determine what evidence the instrument and measurement require.
- Can a replacement device be used automatically?
- Assess protocol suitability and necessary approval before relying on the replacement.