Amniotic fluid in a clean, unused container. Include patient’s gestational age in weeks.
Refrigerate. Do not freeze.
7 days refrigerated.
2 mL amniotic fluid.
0.5 mL amniotic fluid.
Specimen contaminated with red cells will be tested to determine if they are fetal or adult. Visibly bloody specimen will be examined for fetal RBCs by Kleihauer-Betke technique or fetal Hgb methods. Amniotic fluid specimen contaminated with fetal blood may exhibit abnormally high AFP values. Patients with an amniotic fluid AFP ≥ 2 MOM are at increased risk for a neural tube defect or ventral wall defect and should have amniotic fluid acetylcholinesterase determined. The ordering physician will be notified of the abnormal results and a request for acetylcholinesterase can be made at that time.
See patient report. Ranges are based on the weeks of gestation.