The downfall of this test occurs in the presence of hyperbilirubinemia or elevated bilirubin. When the level of bilirubin exceeds 1 mg/dl, a false positive could occur.
This test's accuracy can be compromised when there is an excessive buildup of bilirubin in the body or when bilirubin levels are too high. If bilirubin exceeds 1 mg/dl, a false positive result may occur.