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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
Turnaround Time:

 Test is performed Monday - Friday (1 am - 3:30 pm)
Specimen Requirements: Patient Preparation: Patient must be in the second Trimester between 15 weeks, 0 days and 20 weeks, 6 days

Collect:  Routine Venipuncture

Specimen Preparation: Preferred specimen is SST (gold top) tube, acceptable red top tube

Storage/Transport: Preferred:  Keep samples refrigerated until delivered to laboratory

Stability: Samples tightly stoppered at room temperature are stable for 8 hrs.  If sample analysis will not be completed within 8 hrs, refrigerate the sample at 2-8°C.  If the assay will not be completed within 48 hrs or for shipment of samples, freeze at -20°C or colder.  Thaw samples only once.

Causes for Rejection: Hemolyzed samples, samples not collected in appropriate tube or samples stored in inadequate conditions for testing.  Patient is less than or greater than the gestational age cutoff.
Reference Range:

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

 Please provide completed patient information sheet with sample.
CPT 4 Code:

 82105
Reviewed 5/18/12 by Tho Nguyen

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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