title: Clinical problems with a free thyroxine assay.
mesh_terms: D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D006980:Hyperthyroidism / Q000097:blood; D007037:Hypothyroidism / Q000097:blood; D008722:Methods; D011247:Pregnancy; D013960:Thyroid Function Tests; D013974:Thyroxine / Q000097:blood*
chemical_list: D013974:Thyroxine