TARGET SCORE OF RIQAS AND SIGMA METRICS FOR EVALUATING THE ANALYTICAL PERFORMANCE OF THYROID FUNCTION TESTING ON ADVIA CENTAUR XPT IMMUNOASSAY ANALYSER
Journal Title: Journal of Evolution of Medical and Dental Sciences - Year 2019, Vol 8, Issue 7
Abstract
BACKGROUND Quality test reporting is essential part of diagnosis in any aliment, especially where the symptoms and signs are subtle like in thyroid disease. Quality assurance in clinical laboratory is presently done by both internal and external quality programs. RIQAS program Target Score is a performance indicator and sigma metrics is considered as a gold standard for overall performance. The ai of this study was to present the Target Scoring (TS) and Sigma Metrics observed in our clinical chemistry laboratory in a tertiary care hospital to evaluate the analytical performance of T3, T4, TSH parameters. MATERIALS & METHODS The thyroid function parameters Bio-Rad daily controls run on Siemens ADVIA Centaur XPT Immunoassay analyser to monitor the CV; and returned results of Target Score, SDI and %age Deviation of monthly run controls of Randox RIQAS external quality program are taken for a consecutive three months period for this study. Sigma values calculated and quality control interpreted. RESULTS Our EQAS results showed two thirds of good performances. In August, the 3 tests were performing well. But in the month of September, TSH was having a very low TS; and SDI, % Deviation were outside limits. In October, T3 results were not acceptable and TSH analysis needed improvement. Only T4 results were shown to be consistent and steady. On the other side, sigma metrics were below three sigmas for all the 3 months as we had a wider imprecision (CV). CONCLUSION Quality check strategies were applied according to the TS and sigma values.
Authors and Affiliations
Babu Rao Rentapalli, Suresh Babu Ganji, Dawood Sulemani M. D.
Keywords
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- EP ID EP554886
- DOI 10.14260/jemds/2019/98
- Views 89
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