Test Details
Mnemonic
HCY
Ordering Code
1006300
CPT-4 Code(s)
83090
Specimen Information
Collect
Lavender EDTA
Specimen Preparation
Separate plasma from cells immediately and send 2.0 mL plasma in a screw capped plastic vial.
Alternate Specimen
Plasma: Lithium heparin
Minimum Volume
0.5 mL
Transport Temperature
Frozen
Rejection Criteria
Grossly lipemic, grossly hemolyzed specimens, serum, plasma not immediately separated from
cells.
cells.
Stability
Room temperature: Unacceptable
Refrigerated: 2 days
Frozen: 13 weeks
Refrigerated: 2 days
Frozen: 13 weeks
Methodology
Chemiluminescence
Reference Range
4 - 14 µmol/L
Performing Laboratory
Warde Medical Laboratory
New York DOH Approval Status
Yes