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

Methodology

Radioimmunoassay
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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
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Performing Laboratory

Quest SJC
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