METHOD FOR DETERMINING THYROXINE UPTAKE

摘要

A method for determining the thyroxine uptake of a sample serum characterised in that it comprises: (a) incubating the sample serum with (i) a composite comprising thyroxine immobilized on an insoluble carrier material and (ii) an excess of a labeled antibody to thyroxine binding globulin over endogenous thyroxine binding globulin, to form a complexed composite: (b) separating the complexed composite from any unbound labeled antibody; (c) measuring the amount of label associated with the complexed composite; and (d) calculating a thyroxine uptake ratio of the sample serum by relating the measurement of (c) to a measurement of a reference serum is disclosed.