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Alpha Subunit
Last Modified:
3/17/2016 11:12:30 AM
Specimen Requirements:
1.0 mL Serum from a
Red Top Tube
in a Plastic Vial
Minimum Volume:
0.5 mL Serum
Transport & Storage: Temperature/Stability:
7 days Ambient (transport)
10 days Refrigerated
28 days Frozen
Rejection Criteria:
Gross hemolysis • Plasma • Grossly icteric
Reference Range:
Males
0.1-0.5 ng/mL
Premenopausal Females
0.1-0.6 ng/mL
Postmenopausal Females
0.1-1.5 ng/mL
Pregnancy (1st and 2nd Trimesters)
35.0-186.0 ng/mL
Hypothyroidism
0.2-3.2 ng/mL
Test Comments:
This test measures the alpha subunit that is common to LH, FSH, TSH and hCG. These hormones are comprised of identical alpha subunits and unique beta subunits that confer biological specificity.
Methodology:
Electrochemiluminescence (ECLIA)
Clinical Significance:
This assay is useful in the diagnosis and management of various pituitary, placental, pancreatic and hCG-producing tumors. The assay can also be useful for investigations where alpha subunit is increased under various physiological stimuli, e.g., GnRH stimulation and TRH stimulation tests.
Custom Panel:
No
PRODUCTION SCHEDULE
Turn Around Time:
4 to 11 days
Days Performed:
Tuesday, Friday
Sites Performed:
Quest - Chantilly to San Juan Capistrano
PHL Test Code:
MSOT
EPIC Test Code:
Send Out Test Code:
8658
Alternate Test Names:
Alpha Subunit of Pituitary; Alpha Subunit of the Gonadotropin; Glycoprotein Alpha Subunit; Gonadotropin Alpha Subunit; Pituitary Glycoprotein Hormone Alpha Subunit
CPT Coding:
82397
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