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medical laboratory practise
if the laboratory equipment deviates from the control standard range it should be recalibrated.
There are number of steps that are needed to be taken when controls are out of 2 SD (mostly)
1. check expiry of controls
2. check visually for any turbidy (contamination)
3. check calibration of your system
4. check lot and batch number
5. Operator's handling
6. call engineers to check the machine ( for optics, pressures, etc.)
7. Get it run in another laboratory to check your system
Caliberate the machine,then run the QC again and if QC with in the normal range proced the test
Take fresh QC and run. If qc still out side standard deviation, Calibrate the instrument with calibrators. If clibration is not succussful, change reagents and calibrate. If calibration succussful, rerun qc and see. If qc within standared deviation, we can run patient samples.
TECHNICIEN ANALYE MEDICALE
IT SIMPLY MEANS THE MEASURE SYSTEM SYSTEM IS NOT IN CONTROL, PREVENTIVE MAINTENANCE IS NOT IN PLACE, THE HISTORY OF EQUIPMENT IS NOT MAINTAINED FOR ANALYSIS OF THE TEST RESULTS.
SO ALL THE TEST PERFORMED NEED TO BE QUARANTINED, AND THE RESULT SHOULD BE RECALLED. LABORATORY EQUIPMENT NEEDS TO BE CALIBRATED AT EARLIEST AND THE QUARANTINED TEST TO BE RETESTED.
FURTHER ISO 17025 CALLS FOR THE RECORD OF CALIBRATIONS.
Equipments can be re calibrated by their standard calibration technique.
The equipments should not be use for the analysis of the Patient samples, it must be investigated and corrective actions should be done.
RECALIBRATE THE EQUIPMENTS WITH SPECIFIED CALIBRATORS
Recalibrate with certified control standard and if recalibration does not work, deviation might have been caused by a hardware malfunction or might need some firmware corrections.