Potassium

• Hyperkalaemia (Patient.info), Hypokalaemia (Patient.info)

Sodium

• SIADH: Hyponatraemia (CKS)

• SSRI drugs are well known causes of hyponatraemia, as are diuretics and antipsychotics.(RCGP, July 2024)

Abnormal LFTs/bilirubin

• Gilbert's syndrome: see gastroenterology

• Neonatal jaundice: see child health

General resources

• Lab Tests Online (Association for Clinical Biochemistry & Laboratory Medicine) 

• Southern Derbyshire Shared Care Pathology: local guidelines for allergy, calcium & bone, cardiology, diabetes, endocrinology, haematology, lipids, liver & gastroenterology, potassium, PSA, renal, sodium, thyroid (Derby Hospitals, NHS)

• A primary care approach to sodium and potassium imbalance (bpac.org.nz)

• Royal College of Pathologists (RCPATH)

• Duty of care regarding communication of investigation results (BMA, 2016)