|Maternal Screen NTD Amniotic Fluid
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|Screen for Open Neural Tube Defect (NTD). Positive result reflexes to Maternal Screen ACHE test for confirmation.
|ACHE Test by Immunoelectrophoresis
|Avg. Turnaround Time
|Coralville, 8 a.m. - 5 p.m., M-F
|3 - 5 business days
|Quantitative Chemiluminescent Immunoassay
|2 mL Amniotic Fluid
A comparison of the different maternal screening tests and complete collection and shipping instructions may be found here.
|Amniocentesis. Specimen must be collected between 96 and 160 days gestational age for valid results.
|Use an aliquot tube or tube without preservative to collect amniotic fluid at amniocentesis procedure. Program brochures and patient consent forms are available for order.
|Temperature and Stability:
|Refrigerated (2-8°C). Specimen must be received within 9 days of collection.
|Amniotic fluid contaminated with fetal blood cannot be reflexed to ACHE test if Positive. Samples not collected within the required gestational age range for the test requested.
|MoM value for AFP (NTD screen); Screen Cutoff established for test; Interpretation/Recommended Action: Negative / No further action or Positive / See ACHE result.
|Wrap specimen container in absorbent material and place inside a biohazard bag. Transport specimen with cold pack. Ship to the Coralville location.
|Incorrect information, especially incorrect dating, will result in inaccurate risk assessment. The following information is required for test interpretation: Patient's date of birth, ultrasound date, AND measurement to date the pregnancy, patient's race, if patient requires insulin, and if there is a known family history of neural tube defects (NTD).
|AFP Amniotic Fluid, Alpha Fetoprotein Amniotic Fluid