Test Details
Mnemonic
FTS
Ordering Code
3024000
CPT-4 Code(s)
81508 (or 84163, 84702)
Specimen Information
Patient Preparation
Collect sample between CRL 42 mm and CRL 79.9 mm.
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: Serum separator tube (SST)
Minimum Volume
0.6 mL
Transport Temperature
Refrigerated
Rejection Criteria
Moderately hemolyzed, lipemic, icteric, plasma
Stability
Room temperature: 5 days
Refrigerated: 7 days
Frozen: 60 days
Refrigerated: 7 days
Frozen: 60 days
Methodology
Chemiluminescence
Reference Range
See report
Performing Laboratory
Warde Medical Laboratory