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92590: Corticosteroid Binding Globulin (cbg) [117] Print View
CBG IMMUNOASSAY  1.9 - 4.5  mg/dL 

PRIMARY
1 Serum 1 (0.5) mL   Frozen - 30 Day(s)/Refrigerated - 24 Hour(s)/Room Temperature - 4 Hour(s)  
ALTERNATE

Corticosteroid binding globulin (CBG) is a serum alpha 2 globulin-binding protein with high affinity binding for cortisol. Cortisol binds to CBG approximately 92% of blood levels and rest of the cortisol is as free or bound to serum albumin. CBG is synthesized in liver. The level of CBG is increased during pregnancy and individuals taking contraceptive pills. Elevated levels are also observed in acute hepatitis and in inherited abnormality. Insulin inhibits the synthesis of CBG. The serum level of CBG is lower in hyper-insulinemic status, as in diabetes, PCO and obesity. Severe liver disease and malnutrition may result in low level of CBG. Quantitation of CBG in serum may be useful in assessing unexpected levels of cortisol in serum.
Setup Schedule
Wednesday

Reported (Analytical Time)
4-9 days

CPT Code
84449

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
**This test is not available for New York patient testing** Reject Criteria: Received room temperature; gross hemolysis Transport Temperature: Frozen






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