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

Methodology

Chemiluminescence
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Reference Range

See report
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Performing Laboratory

Warde Medical Laboratory
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