OLEARY, N; PEMBROKE, A; DUGGAN, PF

1992

September

Clinical Chemistry

A SIMPLIFIED PROCEDURE FOR ELIMINATING THE NEGATIVE INTERFERENCE OF BILIRUBIN IN THE JAFFE REACTION FOR CREATININE

Published

()

PLASMA

38

9

1749

1751

The negative interference by bilirubin in the measurement of creatinine by the Jaffe procedure is well documented. We describe a procedure for the elimination of interfering bilirubin by oxidation to biliverdin through the addition of potassium ferricyanide before the alkaline picrate reagent. We detected no negative interference with the addition of as much as 600-mu-mol/L bilirubin. The procedure shows good agreement with a recently described blank rate method for analyzing icteric samples (Clin Chem 1991;37:1460-1).

0009-9147