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93103: Insulin, Intact, Lc/ms/ms Print View
Insulin, Intact, LC/MS/MS     uIU/mL 

PRIMARY
1 Serum 0.5 (0.3) mL   Room Temperature - 24 Hour(s)/Refrigerated - 28 Day(s)/Frozen - 28 Day(s)  
ALTERNATE

The determination of insulin in serum is primarily used for the diagnosis of glycemic disorders in diabetic and pre-diabetic patients in the assessment of insulin resistant syndromes. C-peptide is a peptide that connects insulin's 2 peptide chains and is released from proinsulin during processing and subsequently co-secreted from the pancreatic beta cell. Because of differences in half-life and hepatic clearance, peripheral blood levels of C-peptide and insulin are no longer equimolar but remain highly correlated. Measurement of endogenous insulin and C-peptide is useful for distinguishing (1) insulin-secreting tumors from exogenous insulin administration as a cause for hypoglycemia and (2) type 1 from type 2 diabetes.

Overnight fasting is required.
Collect blood samples observing routine precautions for venipucture.
Allow serum samples to clot completely before centrifugation.
Setup Schedule
Monday, Wednesday

Reported (Analytical Time)
3 days

CPT Code
83525

The CPT codes provided 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 payer being billed.

Notes
Reject Criteria: Hemolysis Transport Temperature: Refrigerated Methodology: Immunocapture Liquid Chromatography/Tandem Mass Spectrometry






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