IFCC-IOF study investigates harmonization of assays for ß-CTX

(International Osteoporosis Foundation) This new study by the IFCC-IOF Committee for Bone Metabolism investigates harmonization of assays for the bone marker ß-CTX. It shows large within- and between-assay variation for ß-CTX measurement. Until harmonization is achieved, the Committee proposes measuring ß-CTX by the same assay on EDTA plasma, especially for research.