80470:ALPHA-SUBUNIT OF PITUITARY GLYCOPROTEIN HORMONES, SERUM

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80470:ALPHA-SUBUNIT OF PITUITARY GLYCOPROTEIN HORMONES, SERUM
Alias Names: Alpha-PGH / Alpha-PCG / Human Chorionic Gonadotropin (hCG) / Soft-APGH / CG
Edit Date: 8/18/2010
Performed: Thursday
Released: 48 hours after setup at PeaceHealth Laboratories’ reference lab
CPT Code: 83520-90
Specimen Collection Details
Collection: One 7.5 mL serum separator tube (SST).
Handling: Allow to clot, centrifuge and separate serum into a plastic vial. Freeze. Refrigerated specimens are acceptable if they arrive at reference lab within 72 hours of collection.
Standard Volume: 1 mL serum
Minimum Volume: 0.5 mL serum
Transport: Frozen on dry ice.
Comments: Useful in the diagnosis of pituitary tumors, follow-up treatment of pituitary tumor patients, differential diagnosis of TSH-secreting pituitary tumor versus thyroid hormone resistance, or CDP versus HH.

The alpha-subunit of pituitary glycoprotein hormone assay has been called the alpha-human chorionic gonadotropin (hCG) assay. However, the assay measures the alpha-subunit of thyroid-stimulating hormone, in addition to that of hCG. Quantitating the alpha-subunit has been advocated as a monitoring test to detect the recurrence of tumors in patients who have undergone resection of pituitary adenomas.

Rejection Criteria: Specimen not frozen within 72 hours of collection; gross hemolysis; plasma.