Test Details

Mnemonic

ZSTRB

Ordering Code

3510025

CPT-4 Code(s)

86316

Specimen Information

Collect

Serum separator tube (SST)

Specimen Preparation

Allow specimen to clot completely at room temperature. Centrifuge, separate from cells within 2 hours and send 2.0 mL serum in screw capped plastic vial.

Alternate Specimen

Serum: Red top

Minimum Volume

0.5 mL

Transport Temperature

Frozen

Rejection Criteria

Specimens exposed to repeated freeze/thaw cycles.

Stability

After separation from cells:
Room temperature: 2 days
Refrigerated: 14 days
Frozen: 2 months

Methodology

Immunofluorescence assay
more

Reference Range

0.0 - 1.7 ng/mL
more

Performing Laboratory

ARUP Reference Laboratory
more