Test Details
Mnemonic
RT3
Ordering Code
3426700
CPT-4 Code(s)
84482
Specimen Information
Collect
Red top
Specimen Preparation
Centrifuge, separate serum from cells and send 1.0 mL serum in a screw capped plastic vial.
Minimum Volume
0.5 mL
Transport Temperature
Refrigerated
Rejection Criteria
Serum separator tube (SST), Grossly lipemic or hemolyzed samples, plasma
Stability
Room temperature: Unacceptable
Refrigerated: 7 days
Frozen: 3 months
Refrigerated: 7 days
Frozen: 3 months
Methodology
Liquid Chromatography/Tandem Mass Spectrometry
Reference Range
≥18 years: 9.0-27.0 ng/dL
Performing Laboratory
Warde Medical Laboratory
New York DOH Approval Status
No