Immunoassay techniques / Michael J. Wheeler -- High-performance liquid chromatography for hormone assay / John W. Honour -- Gas chromatography-mass spectrometry / John W. Honour -- An introduction to PCR techniques / Gill Rumsby -- Methods for the investigation of thyroid function / Christine R. Squire -- Assays for LH, FSH, and prolactin / Michael J. Wheeler -- Adrenocorticotropic hormone and related peptides / Les A. Perry -- Measurement of glucocorticoids in biological fluids / Geoff Holder -- Urinary steroid profiling / Norman F. Taylor -- Measurement of aldosterone in blood / Marion L. Cawood -- Measurement of plasma renin activity / Marion L. Cawood -- Measurement of androgens / Michael J. Wheeler -- Measurement of gut hormones in plasma / Shahred Taheri, Mohammed Ghatei and Steve Bloom -- Measurement of melatonin and 6-sulphatoxymelatonin / Benita Middleton