Urine contaminated with amniotic fluid makes urine protein creatinine ratio falsely positive

What is it about?

We proved that urine that gets contaminated with amniotic fluid in term pregnant patients makes the urine protein creatinine ratio falsely positive in patients being worked up for possible preeclampsia

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Why is it important?

The use of catheterized urine for the protein creatinine ratio test should be considered standard in patients with ruptured membranes