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37101: Growth Hormone Binding Protein (gh-bp) [114] Print View
GH-BP IMMUNOASSAY    pmol/L 

PRIMARY
1 Serum 1 (0.2) mL   Frozen - 30 Day(s)/Refrigerated - 6 Hour(s)/Room Temperature - 4 Hour(s)  
ALTERNATE

Human growth hormone (GH) exists in several isomeric forms in serum, either free or bound to a specific binding protein (GH-BP). This protein is identical to extracellular domain of the GH receptor on the cell membrane. Level of GH-BP varies with age, being low in neonates and highest in young adults. Normal or elevated levels in patients with classical Laron syndrome indicate a defect in the transmembrane, intracellular or post translational GH receptor domains. Very low or absent GHBP denotes a defect in the extracellular domain. A low GH-BP in relatives of patients with Laron syndrome helps identify heterozygous carriers of patients with defects in the extracellular domain.
Setup Schedule
Tuesday

Reported (Analytical Time)
4-9 days

CPT Code
83520

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** Rejection Criteria: Received room temperature; gross hemolysis Transport Temperature: Frozen






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