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
Refrigerated: 7 days
Frozen: 60 days
Methodology
Chemiluminescence
Reference Range
See report
Performing Laboratory
Warde Medical Laboratory