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Test Code LAB10720 Quad Screen (Maternal Serum)

Department

Send Outs

Reference Lab Test Number

QUAD

Collection Requirements

Sample should be collected between 15 weeks 0 days and 22 weeks 6 days gestation. Completed Prenatal Screen Information Sheet located (above) under Test Documentation and in the Appendices of the Test Directory, 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

81511 (or 82105, 82677, 84702, 86336)

Unacceptable Conditions

Moderately hemolyzed specimens, lipemic specimens, plasma

Additional Information

Includes:

Alpha-fetoprotein (AFP)

Human Chorionic Gonadotropin (hCG)

Unconjugated Estriol (UE3)

Inhibin A

Prenatal Screen Information Sheet