Insulin, Free & Total : ARUP Lab Tests

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Insulin, Free & Total : 0070155

Mnemonic: INS F&T

Methodology:	Chemiluminescent Immunoassay
Performed:	Mon, Thu
Reported:	2-6 days
Specimen Required:	Collect: One 4 mL serum separator tube. 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

Reference Interval:

Test Number	Components	Reference Interval
	Insulin, Free	By report
	Insulin, Total	By report

Interpretive Data:

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.

CPT Code(s):

83525 Insulin, total; 83527 Insulin, free

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