SOMMAIRE : Sample handling; Hormone assays; Hormone reference ranges and protocols; Investigation of polyuria and polydipsia; Investigation of hypercalcaemia and hypocalcaemia; Investigation of feline hypokalaemia; Investigation of hyperlipidaemia; Investigation of symmetrical alopecia in dogs; The uncontrollable diabetic; Canine hypothyroidism; Feline hyperthyroidism; Canine diabetes mellitus; Feline diabetes mellitus; Diabetic ketoacidosis; Canine hyperadrenocorticism; Canine hypoadrenocorticism; Pituitary dwarfism; Acromegaly; Unusual thyroid disorders; Insulinoma; Feline hyperadrenocorticism; Feline hypoadrenocorticism; Phaeochromocytoma; Unusual gastrointestinal endocrine disorders; Autoimmune polyglandular disease; Index.