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USMLE
The Female Reproductive System II
A woman, 38 weeks pregnant, arrives in the labor and delivery suite and tells the nurse that she thinks her membranes have ruptured. The nurse uses phenaphthazine (Nitrazine) paper to test the leaking fluid. The nurse expects the Nitrazine paper to turn which color if amniotic fluid is present?
Explanation
ExplanationAmniotic fluid is alkaline and turns Nitrazine paper blue. Urine is acidic and turns Nitrazine paper red.
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