|Test Code||ACHE_ -M|
|Test||ACETYLCHOLINESTERASE, AMNIOTIC FLUID (AChE-AF), AMNIOTIC FLUID|
|Description||Useful for open tube defects and, to a lesser degree, ventral wall defects.|
|Specimen||1.0 mL of uncentrifuged amniotic fluid. A specimen from the 16 -18 week gestational period of pregnancy is preferred. Amniotic fluid from the 14 - 21 week gestational period is acceptable. Send specimen refrigerated.
|Reference Values||Negative (reported as negative [normal] or positive [abnormal] for inhibitable AChE)
Reference values were established in conjunction with alpha-fetoprotein testing and include only amniotic fluids from pregnancies between 14 and 21 weeks gestation.
|Analytic Time||7 Days|
|Day(s) Test Set Up||Wednesday|