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HelpTest 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.
Refer To
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