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HelpEpic Test Code LAB528A Insulin, Free and Total
Additional Codes
ARUP:0070155
Performing Location(s)
ARUP
Ordering Recommendation
Not recommended to diagnose diabetes mellitus.
Specimen Type
Serum
Preferred Container
Gold
Minimum Volume
2 mL serum
Storage Requirements
Frozen
Specimen Stability
Ambient: 8 hours
Refrigerated: 1 week
Frozen: 1 month
Transportation Needs
Frozen
Causes for Rejection
Mislabeled or unlabeled specimen.
Less than 50% draw for Vacutainer tubes
Heparinized specimens.
Sodium fluoride/potassium oxalate plasma.
Hemolyzed specimens.
Turnaround Time
2-3 days once recived into performing lab
Reference Interval
| Components | Reference Interval |
|---|---|
| Insulin Free | 3-25 µIU/mL |
| Total Insulin | 3-25 µIU/mL |
Interpretive Data
This test reacts on a nearly equimolar basis with the analogs insulin aspart, insulin glargine, and insulin lispro. Insulin detemir exhibits approximately 50 percent cross-reactivity. Test reactivity with insulin glulisine is negligible (< 3 percent). To convert to pmol/L, multiply µIU/mL by 6.0.
Reference intervals established for fasting specimens.
Days of Analysis
Mon, Wed-Sat
Available STAT
No
Methodolgy
Quantitative Ultrafiltration/Quantitative Chemiluminescent Immunoassay
CPT Code
83525; 83527
Last Updated
19-Apr-23 BHD