Test ID: Z3560
CPT code: 83519
LOINC: 2485-1
Specimen Type: Red or SST
Frequency: 9 – 13 days
Instructions: 0.5 mL Serum from Red or SST, Frozen. Min 0.1 mL.
Text: An adjunct to IGF-I in the clinical evaluation of growth hormone-related disorders. Plasma specimens produce falsely decreased results.
Methodology: Radioimmunoassay (RIA) after acid: alcohol extraction