The page below is a sample from the LabCE course Chemical Screening of Urine by Reagent Strip. Access the complete course and earn ASCLS P.A.C.E.-approved continuing education credits by subscribing online.

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Confirmatory Testing for Urine Bilirubin

Confirmatory testing using an alternative method, such as Ictotest® reagent tablets, can be performed when positive results are seen on the urine reagent strip, when a red color forms on the strip, or when atypical color changes occur that are the result of bilirubin-derived bile pigments in the urine. The Ictotest® employs the same diazotization reaction as the reagent strip, but should not give a false-positive result with colored urines.