Test Details
Mnemonic
GRH
Ordering Code
3805300
CPT-4 Code(s)
83727
Specimen Information
Patient Preparation
Patient should not be on any Steroid, ACTH, gonadotropin or Estrogen medications, if possible, for at least 48 hours prior to collection.
Collect
Serum separator tube (SST)
Specimen Preparation
Centrifuge, separate and send 3.0 mL serum frozen in a screw capped plastic vial.
Alternate Specimen
Red top
Minimum Volume
1.0 mL
Transport Temperature
Frozen
Rejection Criteria
Grossly hemolyzed, lipemic or icteric specimens
Stability
Room temperature: Unacceptable
Refrigerated: 7 days
Frozen: 90 days
Refrigerated: 7 days
Frozen: 90 days
Methodology
Radioimmunoassay
Reference Range
Adult Males: 4.0-8.0 pg/mL
Adult Females: 2.0-10.0 pg/mL
Adult Females: 2.0-10.0 pg/mL
Performing Laboratory
Mayo Clinic Laboratories
New York DOH Approval Status
No