Test Details

Mnemonic

QUAD

Ordering Code

3028000

CPT-4 Code(s)

81511 (or 82105, 82677, 84702, 86336)

Specimen Information

Patient Preparation

Collect sample between 15 weeks 0 days and 22 weeks 6 days gestation.

Collect

Red-top

Specimen Preparation

Centrifuge, separate serum from cells within 2 hours of collection and send 1.0 mL serum refrigerated in a screw-capped plastic vial. A completed Prenatal Screen Information Sheet must accompany specimen.

Alternate Specimen

Serum: SST

Minimum Volume

0.6 mL

Transport Temperature

Refrigerated

Rejection Criteria

Moderately hemolyzed, lipemic or icteric specimens; plasma

Stability

Room temperature: 7 days
Refrigerated: 7 days
Frozen: 60 days

Methodology

Chemiluminescence
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Reference Range

See report
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Performing Laboratory

Warde Medical Laboratory
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