Ordering Recommendation

Aids in the detection of insulinoma. Do not use to diagnose diabetes mellitus.

Mnemonic

INSULIN FT

Methodology

Quantitative Chemiluminescent Immunoassay

Performed

Sun-Sat

Reported

Within 24 hours

New York DOH Approval Status

This test is New York DOH approved.

Specimen Required

Patient Preparation
Collect

Serum separator tube. Also acceptable: Lavender (EDTA) or pink (K2EDTA).

Specimen Preparation

Allow specimen to clot completely at room temperature. Separate serum or plasma from cells ASAP or within 2 hours of collection. Transfer 1 mL serum or plasma to an ARUP Standard Transport Tube. (Min 0.4 mL)

Storage/Transport Temperature

Frozen.

Unacceptable Conditions

Heparinized plasma. Vitreous or I.V. fluids. Specimens collected in gray (sodium fluoride/potassium oxalate). Hemolyzed specimens.

Remarks
Stability

After separation from cells: Ambient: 8 hours; Refrigerated: 1 week; Frozen: 1 month

Reference Interval

3-19 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.

Compliance Category

FDA

Note

Hotline History

N/A

CPT Codes

83525

Components

Component Test Code* Component Chart Name LOINC
0070063 Insulin, Fasting 27873-9
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.

Aliases

Insulin, Fasting