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Test Code LAB13289 Maternal Serum Alpha-Fetoprotein

Department

Send Outs

Reference Lab Test Number

MSAFP

Collection Requirements

Sample should be collected between 15 weeks 0 days and 22 weeks 6 days gestation. Completed Prenatal Screen Information Sheet located (below) under additional information, must accompany sample.

Primary Collection Container

Red (No Gel)

Alternate Collection Container

Gold (SST)

Transport

Serum ambient

Preferred Transport Temperature

Ambient

Processing

Centrifuge, separate serum from cells within 2 hours of collection and send 1.0 mL serum (0.6 mL minimum) refrigerated in a screw-capped plastic vial.

Stability

Ambient: 7 days

Refrigerated: 7 days

Frozen: 2 months

Minimum Testing Volume

0.6 mL

Reference Range

By report

Methodology

Chemiluminescent Immunometric Assay

Performed

Monday – Friday

Reported

3-4 days

CPT Codes

82105

Unacceptable Conditions

Moderately hemolyzed specimens, lipemic specimens, plasma

Additional Information

Includes: Alpha-Fetoprotein (AFP)

Screens for neural tube defects (NTD). May be requested as a follow-up to First Trimester Screen.

Prenatal Screen Information Sheet