Test Details
Mnemonic
HTL12
Ordering Code
3503620
CPT-4 Code(s)
86790 RUO, plus 86689 RUO if repeatedly positive and reflexed to WB confirm, at additional cost
Specimen Information
Collect
Serum separator tube (SST)
Specimen Preparation
Centrifuge, separate serum from cells within 2 hours and send 0.5 mL serum in a screw capped plastic vial.
Alternate Specimen
Plasma: Lavender EDTA, green sodium or lithium heparin, light blue sodium citrate
Serum: Red top
Serum: Red top
Minimum Volume
0.5 mL
Transport Temperature
Refrigerated
Rejection Criteria
Grossly hemolyzed, lipemic or heat-inactivated specimens Specimens containing particulate matter
Stability
Room temperature: Unacceptable
Refrigerated: 7 days
Frozen: Indefinitely
Refrigerated: 7 days
Frozen: Indefinitely
Methodology
Enzyme Linked Immunosorbent Assay
Reference Range
Negative
Performing Laboratory
ARUP Reference Laboratory
New York DOH Approval Status
Yes