Gynaecology & Obstetrics Blood will interfere with the nitrazine test for de tecting ruptured membranes because: A It is acid B It is alkaline C It contains increased amounts of sodium chloride D It contains decreased amounts of sodium chloride 💡 Explanation Blood will interfere with the nitrazine test for de tecting ruptured membranes because: ✓ Correct Answer: B. It is alkaline