Which statement about bilirubin testing is correct and uses diazo reaction and icotest for confirmation?

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Multiple Choice

Which statement about bilirubin testing is correct and uses diazo reaction and icotest for confirmation?

Bilirubin in urine is detected by the diazo reaction, which reacts with conjugated bilirubin to form a colored product. Because urine can contain other pigments that may cause misleading color, a confirmatory test like Icotest is used to verify the result. In Icotest, a positive result is indicated by a blue color. So the best statement combines using the diazo reaction, confirming with Icotest, and interpreting blue as a positive result.

Bilirubin in urine is detected by the diazo reaction, which reacts with conjugated bilirubin to form a colored product. Because urine can contain other pigments that may cause misleading color, a confirmatory test like Icotest is used to verify the result. In Icotest, a positive result is indicated by a blue color. So the best statement combines using the diazo reaction, confirming with Icotest, and interpreting blue as a positive result.

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