INSULIN

Test Documentation
Specimen Required
Draw blood in a SST. Centrifuge, separate and send 1.0 mL serum (0.4 mL minimum) refrigerated in a screw-capped plastic vial.

Alternate Specimen
Plasma: Heparin (sodium or lithium)
Serum: Red-top

Rejection Criteria
Hemolyzed, icteric, grossly lipemic specimens, EDTA plasma, NaFluoride plasma

Methodology
Chemiluminescence

Stability
Room Temperature: Unacceptable; Refrigerated: 7 days; Frozen: 3 months

Reference Range
<29.1 uIU/mL

Performed
Monday-Friday

Turnaround Time3 days
Test CodeINS
CPT-4 Code (s)
83525
LOINC Codes
20448-7

Warde
Medical
Laboratory