Thyroid UK
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abnormally high prolactin

Hi for the last 6 months I have been suffering with my Thyroid, eventually found out antibodies were high put on 25mg Thyroxine. Went bad to docs cos gaining weight feel tired and started having hot flushes, burning did other blood test THS came back 2.2 (0.4 -5.0) so Thyroxine not been increased. Spoke to Doc again as still not feelig right. He said think we should do some more tests. So had them, Prolactin levels come bqck abnormally high, is this related to my Thyroid or something different?? My usually GP is off at the moment so got a telephone appointment with another doctor on Friday.

thanks in advance for any advice x

1 Reply


Increased levels of prolactin are often seen in people with hypothyroidism (although they do not cause it).

Low thyroid hormone increases TRH (hypothalamus) to stimulate TSH (pituitary) in an effort to produce more thyroid hormone but TRH also stimulates the release of prolactin from the pituitary.

You sound under medicated. Post test results complete with ranges (numbers in brackets) for members to comment.



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