Equilibrium Dialysis Free T 4 : An Evaluation of its Clinical Usefulness as a Supplementary Test in the Routine Laboratory

Ekins R . Validity of analog free thyroxine immunoassays. Clin Chem 1987; 33: 2137–52.

Pearce CJ Byfield PGH . Free thyroid hormone assays and thyroid function. Ann Clin Biochem 1986; 23: 230–7.

Desai RK Deppe WM Norman RJ Govender T Joubert SM . The Simultrac FT4/TSH assay evaluated as a first line thyroid function test. Clin Chem 1988; 34: 1488–91.

Gow SM Caldwell G Toft A Beckett GJ . SimulTRAC simultaneous radioimmunoassay of thyrotropin and free thyroxin evaluated. Clin Chem 1986; 32: 2191–4.

Borst GC Eil C Burman K . Euthyroid hyper-thyroxinaemia. Ann Int Med 1983; 98: 366–78.