title: A study of the factors affecting the precision and accuracy of thyroxine (T4) determinations.
mesh_terms: D001322:Autoanalysis; D001966:Bromine; D002712:Chlorides; D002845:Chromatography; D007202:Indicators and Reagents; D007475:Ion Exchange Resins; D008722:Methods; D000644:Quaternary Ammonium Compounds; D013696:Temperature; D013960:Thyroid Function Tests; D013974:Thyroxine / Q000097:blood*; D013997:Time Factors
chemical_list: D002712:Chlorides; D007202:Indicators and Reagents; D007475:Ion Exchange Resins; D000644:Quaternary Ammonium Compounds; D013974:Thyroxine; D001966:Bromine