Insulin, 90 Minutes

Casandra

Casandra Test Code AR24949Version 1 (DRAFT)

Performing Lab

Lab ARUP LaboratoriesLab Test ID 0070067CPT Code 83525

Also known as: INSULIN 90

Clinical Use

Order Test

Use

The Insulin, 90 Minutes test measures insulin levels after a 90-minute mark and is used in evaluating insulin response to glucose, typically in conjunction with glucose challenge tests. It can help in the diagnosis and management of insulin-related disorders such as insulinoma, diabetes, and insulin resistance. Clinicians leverage this test to understand how the body processes insulin and manages blood sugar levels.

Special Instructions

The test requires specific patient preparation and a serum separator tube for specimen collection. Allow the specimen to clot at room temperature and separate serum or plasma from cells as soon as possible or within two hours of collection. Transfer the specimen into an ARUP Standard Transport Tube.

Limitations

The test can have cross-reactivity with insulin analogs like insulin aspart, insulin glargine, and insulin lispro. Insulin detemir shows about 50% cross-reactivity, whereas insulin glulisine has negligible reactivity of less than 3%. These factors should be considered while interpreting the results. Furthermore, certain conditions can make specimens unacceptable, including heparinized plasma and hemolyzed specimens.

Test Details

FDA Approved

New York Approved

Methodology

Immunoassay (CLIA)

Biomarkers

Insulin

Protein

Insulin Level • Concentration / Level • Quantitative (Continuous) (e.g., copies/mL, % expression)

LOINC Codes

Result Codes

27330-0

Result Turnaround Time

1 day

Specimen

Serum

Volume

1 mL

Minimum Volume

0.4 mL

Container

ARUP Standard Transport Tube

Collection Instructions

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