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Clinical Chemistry 25: 780-782, 1979;
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Clinical Chemistry, Vol 25, 780-782, Copyright © 1979 by American Association for Clinical Chemistry

Alanine aminotransferase and aspartate aminotransferase measurements with two automated analyzers, SMAC and the ABA-100, compared

GV Purcell, DB Behenna and PR Walsh

Measurements of alanine aminotransferase and aspartate aminotransferase with the SMAC were evaluated for correlation with the ABA-100, precision, linearity, and carryover. We assayed 200 specimens with normal and abnormal aminotransferase activities with both the SMAC (y) and the ABA-100 (X). Linear regression analysis of the data yielded the following: alanine aminotransferase (r = 0.9732, y = 0.96x + 3.8); and aspartate aminotransferase (r = 0.9892, y = 0.90x + 2.1). Both aminotransferases demonstrated acceptable intra- and inter-assay variations with the SMAC and ABA-100. With the SMAC the upper limit of linearity for alanine aminotransferase was 350 U/L; that for asparate aminotransferase was 450 U/L. Carryover studies for SMAC indicate that specimens immediately following specimens with alanine aminotransferase activities greater 400 U/L and (or) aspartate aminotransferase activities greater than 500 U/L should be re-analyzed.




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Copyright © 1979 by the American Association for Clinical Chemistry.