Test Details
Mnemonic
COR
Ordering Code
1000650
CPT-4 Code(s)
82533
Specimen Information
Patient Preparation
Not recommended for patients on prednisone/prenisolone therapy due to cross-reactivity with antibody used in assay.
Collect
Serum separator tube (SST)
Specimen Preparation
Centrifuge and separate serum from cells within one hour. Send 1.0 mL serum refrigerated in a screw capped plastic vial.
Alternate Specimen
Serum: Red top
Minimum Volume
0.5 mL
Transport Temperature
Refrigerated
Rejection Criteria
Hemolyzed or lipemic specimens, plasma
Stability
Room temperature: 48 hours
Refrigerated: 7 days
Frozen: 28 days
Refrigerated: 7 days
Frozen: 28 days
Methodology
Immunoassay
Reference Range
0 - 3 days (Infants)
Premature (31 - 35 weeks): a.m. or p.m. ≤15.0 mcg/dL
Term: a.m. or p.m. ≤14.0 mcg/dL
4 days - 1 Month: a.m. or p.m. Not established
2 - 11 Months: a.m. 3.0 - 23.0 mcg/dL
p.m. Not established
1 - 17 years: a.m. 3.0 - 25.0 mcg/dL
p.m. 3.0 - 17.0 mcg/dL
Adult 8 a.m. (7 - 9 a.m.) specimen 4.0 - 22.0 mcg/dL
Adult 4 p.m. (3 - 5 p.m.) specimen 3.0 - 17.0 mcg/dL
Premature (31 - 35 weeks): a.m. or p.m. ≤15.0 mcg/dL
Term: a.m. or p.m. ≤14.0 mcg/dL
4 days - 1 Month: a.m. or p.m. Not established
2 - 11 Months: a.m. 3.0 - 23.0 mcg/dL
p.m. Not established
1 - 17 years: a.m. 3.0 - 25.0 mcg/dL
p.m. 3.0 - 17.0 mcg/dL
Adult 8 a.m. (7 - 9 a.m.) specimen 4.0 - 22.0 mcg/dL
Adult 4 p.m. (3 - 5 p.m.) specimen 3.0 - 17.0 mcg/dL
Performing Laboratory
Quest Valencia
New York DOH Approval Status
Yes