Free thyroid hormones: "free thyroxine".
D005260:Female; D006801:Humans; D011247:Pregnancy; D013960:Thyroid Function Tests; D013974:Thyroxine / Q000097:blood*; D014284:Triiodothyronine / Q000097:blood
D014284:Triiodothyronine; D013974:Thyroxine