41160:ALPHA FETOPROTEIN, AMNIOTIC FLUID (AFAFP)
Author PeaceHealth Laboratories
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| Methodology: |
Chemiluminescent Immunoassay (CLIA) |
| Edit Date: |
6/11/2010 |
| Performed: |
Monday-Friday |
| Released: |
Same day as tested |
| CPT Code: |
82106 |
| Specimen Collection Details |
| Collection: |
Amniotic fluid in a clean, unused container. Include patient’s gestational age in weeks. |
| Handling: |
Refrigerate. Do not freeze. |
| Stability: |
7 days refrigerated. |
| Standard Volume: |
2 mL amniotic fluid. |
| Minimum Volume: |
0.5 mL amniotic fluid. |
| Transport: |
Refrigerated. |
| Comments: |
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. |
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| See patient report. Ranges are based on the weeks of gestation. |