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Maternal Screen Alpha-Fetoprotein (087-3744)
Clinical Indication:

 Screening Test for pregnant women
Test Mnemonic:

 AFP-MS
Methodology:

 Chemiluminescence
Performed:

 Special Chemistry: Monday - Friday (7 am - 3:30 pm)

Turnaround Time:

 M – F: within 24 hours
Specimen Requirements: Patient Preparation: Patient must be in the second Trimester between 15 weeks, 0 days and 20 weeks, 6 days  

 Collect: Routine venipuncture. 7 mL SST (gel barrier) or Red-stoppered tube. (Min. : 3 mL)

Specimen Preparation: Allow specimen to clot completely at room temperature. Centrifuge to separate serum from cells within 2 hours of collection. Transfer serum from collection tube to labeled plastic transport tube.   

 Storage/Transport:   Delivered to Sample Management within 2 hours of collection.  

Stability:  Store samples tightly stoppered at room temperature   for no longer than eight hours;  Refrigerated  for 48 hours; Freeze at -20°C or colder (avoid repeated freeze/thaw cycles).

Causes for Rejection: Patient is less than or greater than the gestational age cutoff.  Incomplete and/or incorrect sample identification, improper storage/transport, and gross hemolysis or lipemia.                    
Reference Range:

By report (reports may vary based on instrumentation, patient age and sex)
Note:

 Please provide completed patient information sheet with sample.  Not available on week-end.
CPT 4 Code:

 82105
Reviewed  Tho Nguyen MT(ASCP) 7/11/13

When ordering tests for which Medicare or Medicaid reimbursement will be sought, physicians should only order tests that are medically necessary for the diagnosis or treatment of the patient.  Components of the organ or disease panels may be ordered individually.  The diagnostic information must substantiate all tests ordered and must be in the form of an ICD-9 code or its verbal equivalent.

 

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