Requesting and interpreting tests -- Disturbances of water, sodium and potassium balance -- Acid-base balance and oxygen transport -- Renal disease -- Disorders of calcium, phosphate and magnesium metabolism -- Trauma, inflammation, immunity and malignancy -- Liver disease -- Gastrointestinal tract disease -- Nutrition -- Diabetes mellitus and hypoglycaemia -- Cardiovascular disorders -- Disorders of iron and porphyrin metabolism -- Uric acid, gout and purine metabolism -- Disorders of the hypothalamus and pituitary -- Abnormalities of thyroid function -- Disorders of the adrenal cortex and medualla -- Investigation of gonadal function, infertility, menstrual irregularities and hirsutism -- Pregnancy and antenatal screening -- Clinical biochemistry in paediatrics and geriatrics -- Central nervous system and cerebrospinal fluid -- Therapeutic drug monitoring and chemical toxicology.