Insulin-Like Growth Factor (IGF-I)

Test Code: TD_4920

CPT Code(s): 84305

$28

Test Details

Alternative Name(s)

IGF
Insulin like growth factor I
Somatomedin-c

Test Includes

Insulin-Like Growth Factor (IGF-I)

Methodology

Roche COBAS Electrochemiluminescent Immunoassay (ECLIA)

Rejection Criteria

Hemolysis
EDTA plasma

Reference Range(s)

Specimen Requirements

Preferred Specimen

Serum Separator Tube

Minimum Volume

0.5 mL serum

Sample Stability

1 day room temperature
2 days refrigerated
28 days frozen

Transport Temperature

Frozen

Collection Instructions

Allow SST to clot in an upright position for at least 30 minutes, then centrifuge sample within 2 hours of collection. Transfer serum to a plastic transport tube. Tube within 2 hours of collection. Clearly label tube as serum. Freeze.
Note: Do not collect samples from patients receiving therapy with high biotin doses (>5 mg/day) until at least 8 hours following the last biotin administration.

Alternative Specimen

2 mL serum from a plain red top tube. Allow sample to clot in an upright position for at least 60 minutes, then centrifuge sample and transfer serum to a plastic transport tube within 2 hours of collection. Clearly label tube as serum from a plain red top tube. Freeze.