Test Details
Mnemonic
ILFG1
Ordering Code
3503750
CPT-4 Code(s)
83519
Specimen Information
Patient Preparation
Overnight fasting prior to collection is preffered.
Collect
Serum separator tube (SST)
Specimen Preparation
Centrifuge, separate serum from cells and send 1.0 mL serum in a screw capped plastic vial.
Alternate Specimen
Serum: Red top
Minimum Volume
0.2 mL
Transport Temperature
Refrigerated
Rejection Criteria
Gross hemolysis, gross lipemia
Stability
Room temperature: 24 hours
Refrigerated: 7 days
Frozen: 28 days
Refrigerated: 7 days
Frozen: 28 days
Methodology
Radioimmunoassay
Reference Range
Adults: 5 - 34 ng/mL
Pediatric: 5 - 9 years: 15 - 95 ng/mL
10 - 14 years: 8 - 64 ng/mL
15 - 18 years: 5 - 40 ng/mL
Pediatric: 5 - 9 years: 15 - 95 ng/mL
10 - 14 years: 8 - 64 ng/mL
15 - 18 years: 5 - 40 ng/mL
Performing Laboratory
Quest
New York DOH Approval Status
Yes