Test Details
Mnemonic
AH50
Ordering Code
3618060
CPT-4 Code(s)
86161 RUO
Specimen Information
Collect
Serum separator tube (SST)
Specimen Preparation
Allow specimen to clot for an hour at room temperature, then centrifuge and separate serum from cells within 2 hours of collection. Send 1.0 mL serum frozen in a screw capped plastic vial. CRITICAL FROZEN.
Alternate Specimen
Serum: Red top
Minimum Volume
0.3 mL
Transport Temperature
Critical frozen
Rejection Criteria
Refrigerated or room temperature specimens.
Specimens other than serum.
Samples clotted at refrigerated temperature.
Specimens repeatedly frozen and thawed.
Specimens other than serum.
Samples clotted at refrigerated temperature.
Specimens repeatedly frozen and thawed.
Stability
Room temperature: 2 hours
Refrigerated: Unacceptable
Frozen: 14 days
Refrigerated: Unacceptable
Frozen: 14 days
Methodology
Semi-quantitative Radial Immunodiffusion
Reference Range
≥59% normal
Performing Laboratory
ARUP Reference Laboratory
New York DOH Approval Status
Yes