TEST DIRECTORY | MIDx Labs

INSULIN (INS)

Assesses insulin resistance, hypoglycemia, or insulinoma.

LIS TEST CODE: INSULIN

CPT CODE: 83525

ALIASES: INS, Fasting Insulin, Immunoreactive Insulin, Native Insulin

METHODOLOGY: Chemiluminescent Microparticle Immunoassay (CMIA)

SPECIMEN:

- Type: Serum

- Container: Gold Top (SST) Vacutainer

- Minimum Volume Required: 1 mL

- Storage/Handling: Allow 30 minutes for blood to clot, then centrifuge specimen at 3500 RPM for 10 minutes. Maintain specimen in the freezer until testing can be performed.

NOTE: If freezing is required to preserve stability, transfer serum into a separate plastic screw-cap transport container.

- Stability:

Room Temperature (20-25 °C): Not Accepted

Refrigerated (2-8 °C): Not Accepted

Frozen (-20 °C or colder): 7 days; avoid multiple freeze/thaw cycles.

- Turnaround Time: 24 - 48 hours from receipt.

Special Instructions: Promptly transfer serum into a separate plastic screw-cap transport container following centrifugation, and place in freezer.

REJECTION REASONS: QNS, Gross Hemolysis, Gross Lipemia, Contamination, Stability Violation, Expired Container, Incorrect Container

REFERENCE RANGES:

Males & Females (uU/mL)

>= 1 years of age: 2.6 - 24.9