For example, pH 6.0 (indicative of an intact membrane) is an olive green while pH 6.5 (indicative of a possible ruptured membrane) is a dark green. The colour squares on the card are only examples always use the colour description found in the IFU in combination with the colour squares as part of your interpretation. A colour interpretation card is included with each box of AmnioTest™. A possible ruptured membrane is indicated if the swab has a pH of 6.5 to pH 7.5 turning the swab dark green to navy blue. AmnioTest™ is a sterile swab impregnated with nitrazine yellow dye that when brought into contact with the upper vagina will absorb fluid and develops a colour to correlate with the pH of the absorbed fluid ranging from pH 5.0 to pH 7.5. Thus, the presence of amniotic fluid elevates the pH of the upper vagina. Rupture of fetal membranes can result in small amounts of amniotic fluid leaking into the upper vagina.
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