Gonadotropin Alpha subunit

Diagnostic Use

Free Alpha Subunit measurement may assist in the diagnosis of some pituitary tumours. Overall, 5-30% of pituitary adenomas may show elevation in serum ASU and not exclusively TSH secreting adenomas.

Free Alpha Subunits may also help to differentiate TSH secreting adenoma (where elevated) from thyroid hormone resistance, both conditions where TSH may be inappropriately high for the level of thyroid hormones in the circulation.

Please note this test is NOT the same as Gonadotrophins (LH and FSH). All requests will be vetted by our Chemical Pathologist prior to analysis.


Endo/Steroid Lab

Delphic Registration Code



Alpha subunit
hCG Alpha

Turnaround Time

16 weeks

Test Code