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Clinical Chemistry 39: 1033-1036, 1993;
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Clinical Chemistry, Vol 39, 1033-1036, Copyright © 1993 by American Association for Clinical Chemistry

Dipyrone interference on several common biochemical tests

N Gascon, C Otal, C Martinez-Bru, J Merce, M Cortes, R Arcelus, JM Queralto, JM Sanchez and F Gonzalez-Sastre
Servei de Bioquimica i, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain.

We studied the effect in vitro and in vivo of dipyrone on the determination of several biochemical tests in two analyzers, a Hitachi 747 and a Kodak Ektachem 700. From studies in vitro, we found significant interference by dipyrone (P < 0.05) in the determination of creatine kinase (CK), lactate dehydrogenase (LD), uric acid, triglycerides, cholesterol, aspartate aminotransferase, alanine aminotransferase, and urea nitrogen with both instruments, and in the determination of creatinine in the Ektachem analyzer. We also studied the effect of intravenously administered dipyrone in 14 patients. Dipyrone interfered significantly (P < 0.05) in the determination of CK, LD, uric acid, triglycerides, and cholesterol with both instruments, and creatinine only with the Ektachem analyzer. Using high- performance liquid chromatography (HPLC), we measured concentrations of dipyrone in the serum of patients who had received the drug and observed a negative correlation between the concentrations of dipyrone in the blood and the percentage of each analyte concentration.




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Copyright © 1993 by the American Association for Clinical Chemistry.