Test Details

Mnemonic

SI1

Ordering Code

3024750

CPT-4 Code(s)

84163

Specimen Information

Patient Preparation

Collect sample between 10 weeks 0 days and 13 weeks 6 days gestation.
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Collect

Red-top
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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.
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Alternate Specimen

Serum: SST
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Minimum Volume

0.6 mL
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Transport Temperature

Refrigerated
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Rejection Criteria

Moderately hemolyzed, lipemic or icteric specimens; plasma
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Stability

Room temperature: 5 days
Refrigerated: 7 days
Frozen: 60 days
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Methodology

Chemiluminescence
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Reference Range

See report
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Performing Laboratory

Warde Medical Laboratory
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