INSULIN, FREE (BIOACTIVE)

Test Documentation
Specimen Required
Patient Preparation: Overnight fasting is required. Draw blood in a SST. Centrifuge, separate and send 0.5 mL serum (0.3 mL minimum) refrigerated in a screw-capped plastic vial.

Alternate Specimen
Plasma: EDTA, Serum: Red-top

Methodology
Immunoassay

Stability
Room Temperature: 12 hours; Refrigerated: 7 days; Frozen: 28 days

Reference Range
1.5-14.9 uIU/mL

Performed
Monday, Wednesday, Friday

Turnaround Time4-7 days
Test CodeINSF
CPT-4 Code (s)
83527
LOINC Codes
6901-3

Warde
Medical
Laboratory