How does Nitrazine paper detect ruptured membranes?

Nitrazine Test This test involves putting a drop of fluid obtained from the vagina onto paper strips containing Nitrazine dye. The strips change color depending on the pH of the fluid. The strips will turn blue if the pH is greater than 6.0. A blue strip means it’s more likely the membranes have ruptured.

Can I test for amniotic fluid at home?

Here’s an amniotic fluid leak test you can do at home: Empty your bladder and put on a panty liner or sanitary pad. Wear the pad for half an hour or so, then examine any fluid that has leaked onto it. If it looks yellow, it’s probably urine; if it looks clear, it’s probably amniotic fluid.

What causes false positive Nitrazine test?

Nitrazine test may also lead to false positive or negative results due to probable contamination by alkaline urine, semen, blood, meconium, vaginitis, cervicitis and using antibiotics.

What is a Nitrazine pH test?

Nitrazine (Phenaphthazine) paper is used to measure the vaginal pH of expectant mothers to determine if the amniotic membrane has ruptured. The pH is used to determine if the fluid present represents amniotic fluid or vaginal fluid.

What color does Nitrazine paper turn with amniotic fluid?

Compare the color, which the moistened paper turns, to the standard color chart on the package of Nitrazine. Because amniotic fluid is neutral (pH 7.0) or slightly alkaline (pH 7.25), it will change the yellow color of Nitrazine Paper.

What does Nitrazine positive mean?

A chemical indicator used to determine pH, especially of vaginal secretions. It is often used in gynecological and obstetrical evaluations, e.g., to determine whether a pregnant woman has premature rupture of membranes with leaking amniotic fluid in the vaginal vault.

When is a Nitrazine test performed?

All samples remained ferning and nitrazine positive. Therefore optimal analysis of suspected amniotic fluid occurs when specimens are air-dried for 10 minutes. These tests may be reliably performed at gestations of 12 to 41 weeks.

What is the Nitrazine test in pregnancy?

This test is done to ascertain the nature of fluid in the vagina during pregnancy especially when premature rupture of membranes (PROM) is suspect. This test involves putting a drop of fluid obtained from the vagina onto paper strips containing nitrazine dye. The strips change color depending on the pH of the fluid.