Canada
A 21-year-old male asked:

Does testosterone have any influence on tsh , does it raises thyroid function or decreases it ?

2 doctor answers3 doctors weighed in
Dr. Thomas Knecht
A Verified Doctoranswered
33 years experience
No effect: Hi. Testosterone has no effect on thyroid function.
Created for people with ongoing healthcare needs but benefits everyone.
Dr. David Geffner
Endocrinology 56 years experience
Correct: Taking testosterone can decrease Thyroid Binding Protein (TBP) so total T4 (and some "free" T4) test(s) can look low. Your endocrinologist will do a free T4 index or a "free" T4 that TBG changes do not influence.
Created for people with ongoing healthcare needs but benefits everyone.
Last updated Dec 13, 2014

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