title: Contradictory findings in the measurement of free thyroxin after administration of heparin.
mesh_terms: D005189:False Positive Reactions; D006493:Heparin / Q000008:administration & dosage; D006801:Humans; D011933:Reagent Kits, Diagnostic; D013974:Thyroxine / Q000097:blood*
chemical_list: D011933:Reagent Kits, Diagnostic; D006493:Heparin; D013974:Thyroxine