Proinsulin

Test Code

PROIN

Quest Code

760

Alias/See Also

760

CPT Codes
84206

Preferred Specimen

1 mL serum

Patient Preparation
Overnight fasting is required

Minimum Volume

0.5 mL

Other Acceptable Specimens

None

Transport Temperature

Frozen

Specimen Stability

Serum:
Room temperature: 24 hours
Refrigerated: 72 hours
Frozen: 6 months

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Received room temperature

Methodology
Enzyme Linked Immunosorbent Assay (ELISA)

FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Setup Schedule

Set up: Mon, Fri; Report available: 5-8 days

Reference Range

≤18.8 pmol/L

Clinical Significance

Proinsulin is used to diagnose insulinomas and to monitor therapy in patients with insulinomas.

Performing Laboratory
Quest Diagnostics Nichols Institute
33608 Ortega Highway
San Juan Capistrano, CA 92690-6130

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.