ARUP's Laboratory Test Directory
| 0070155: Insulin, Free & Total |
| Test Mnemonic: INS F&T | |
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Methodology: Chemiluminescent Immunoassay
Performed: Mon, Thu Reported: 2-6 days |
| Specimen Required: | |
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Collect: One 4 mL SST. Also acceptable: lavender (EDTA), or pink (K2EDTA).
Transport: 2 mL serum or plasma, frozen. (Min: 1.1 mL) Submit specimen in an ARUP Standard Transport Tube. Pediatric Collection/Transport: 1.1 mL serum or plasma, frozen. Remarks: Fasting specimen is preferred. Reference intervals established for fasting specimens. Unacceptable Conditions: Hemolyzed or heparinized specimens. Sodium or fluoride/potassium oxalate plasma. Stability: After separation from cells: Ambient: 8 hours; Refrigerated: 1 week; Frozen: 1 month |
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| Reference Interval: | ||||
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| Interpretive Data: | |
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This assay reacts on a nearly equimolar basis with the analogs insulin aspart, insulin glargine, and insulin lispro. To convert to pmol/L, multiply µIU/mL by 6.0.
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| CPT Code(s): | |
| 83525 Insulin, total; 83527 Insulin, free |