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Positive fern test with amniotic fluid as seen under the microscope. The fern test is a medical laboratory test used in obstetrics and gynecology.The name refers to the detection of a characteristic "fern like" pattern of vaginal secretions when a specimen is allowed to dry on a glass slide and is viewed under a low-power microscope.
Amniotic fluid is mildly basic (pH 7.1–7.3) compared to normal vaginal secretions which are acidic (pH 4.5–6). [10] Basic fluid, like amniotic fluid, will turn the nitrazine paper from orange to dark blue. [9] Fern test: A sterile cotton swab is used to collect fluid from the vagina and place it on a microscope slide.
Nitrazine paper test; Fern test; Amniotic fluid index; For results to be roughly 90% accurate in infection detection, a combination of both an arborization test and nitrazine paper test may be used. [11] An arborization test assesses the patient's vaginal secretions, while a nitrazone paper test uses the nitrazine paper to examines vaginal pH.
Other tests for detecting amniotic fluid mainly include nitrazine paper test and fern test. [8] One main test that is performed on amniotic fluid is the L/S ratio test (lecithin/sphingomyelin). This test is used to determine fetal lung maturity.
Placental alpha microglobulin-1 (PAMG-1) is a human protein that was first isolated in 1975 from amniotic fluid.PAMG-1 is an important biomarker for the detection of premature rupture of fetal membrane (PROM) The high concentration of PAMG-1 in amniotic fluid means it can be used to detect if this fluid is present in the cervico-vaginal discharge of pregnant women; the presence of PAMG-1 in ...
Foodborne illness kills hundreds of Americans a year, sickens tens of millions annually, and costs billions in medical care, lost productivity and premature deaths, federal researchers said in a ...
3. To check the color of the fluid. If there is a suspicion of the presence of meconium (the contents of the baby's bowel), certain preparations must be made. Suctioning must be set up and more personnel are required to be in attendance. 4. To avoid having the baby aspirate the contents of the amniotic sac at the moment of birth.
“That's exactly why you test it,” Goodell said. “To sort of see the accuracy of it, No. 1. The reliability, No. 2. Because you have to be right when you do it, ultimately. And so I think ...