TSH Comparison Between Chemiluminescence (Architect) and Electrochemiluminescence (Cobas) Immunoassays: An Indian Population Perspective |
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| Authors: | Rajarshi Sarkar |
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| Institution: | 1. Department of Biochemistry, Drs. Tribedi & Roy Diagnostic Laboratory Pvt. Ltd, 93 Park Street, Kolkata, 700016, India
2. Santosh Apartments, Flat No. 106, 245/1 Dum Dum Road, Kolkata, 700074, India
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| Abstract: | Although 3rd generation TSH assays are the most widely used immunoassays, credible comparison studies, specially involving Indian sub-populations are practically non-existent. To compare the TSH measurements between chemiluminescence (Architect) and electrochemiluminescence (Cobas) inmmunoassays in an urban ambulatory Indian population. 1,615 subjects were selected randomly from the usual laboratory workflow, their TSH measured in Architect and Cobas and the paired data thus generated were statistically analysed. TSH values of Cobas were observed to be higher than the Architect values by 28.7 %, with a significant proportional difference between the two, but majority of the Cobas values (above 90 %) were within the limits of agreement with Architect values. In situations where both the instruments are in use simultaneously, a standardization of the methods is imperative, in larger interest of the patient populace. |
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| Keywords: | TSH Method comparison Chemiluminescence Electrochemiluminescence Architect Cobas |
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