Chemistry Essay

426 Words2 Pages
Clinical chemistry is one of the many departments in the clinical laboratory that is about eighty percent automated. The instruments used in the chemistry department are manufactured by Hitachi and Roche makes its reagents. The D and P modules are the instruments used. The P module is small, has small amounts of reagents and is used to run smaller volumes of tests and they have one sample probe. The D modules are used to run the main chemistries (16 of them) and an ISE module (i.e. sodium, potassium and chloride) is also attached. There are four different lines, which contains 2 identical modules (2 P’s and 2 D’s). The reason for this is so there would be back in case one module breaks down. Reagents are checked and maintenance is performed daily to make sure the modules are up to par. every test performed by the modular equipment is reported through the DI computer system before it is released. The technologist reviews any test that produces erroneous results, re run the test, perform dilutions and re-evaluate the results before releasing them. An hourly Qc (quality control) is performed to check the status of tests been run, this hourly QC is done because of the high volume of test being performed by the laboratory. If QC fails and is within 2SD, it is accepted and technologist masks that specific test on the particular module. The QC is run again the next hour and if it is within range then the masking is undone. If it fails the QC again, then a recalibration is performed. If the fail is over a 3SD, masking, calibrating and spot check is performed by repeating patient tests to make sure the accurate results were obtained the first time. Due to the unstable nature of the UIBC reagent, recalibration for that particular test is done on a 4-hour basis. Sometimes, the modules do not run the test the first time the samples in the tubes are loaded hence the

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