Progress in laboratory testing of thyroid disease

IFCC international conventional reference procedure for the measurement of free thyroxine in serum. International Federation of Clinical Chemistry and Laboratory Medicine (IFCC) Working Group for Standardization of Thyroid Function Tests (WG-STFT).

Van Houcke SK, Van Uytfanghe K, Shimizu E, Tani W, Umemoto M, Thienpont LM. Clin Chem Lab Med 2011;49:1275-81.