The main purpose of this Manual is to provide useful guidelines for the selection of pathology tests and to facilitate interpretation of results.
Contains a comprehensive listing of all genes from the Human Gene Nomenclature Committee (HGNC) database alongside laboratories and tests available in the country.
A manual for the process of macroscopic dissection in Anatomical Pathology laboratories.
Donate online now using the button below. RCPA Foundation thanks you for your generous support. All funds raised will be allocated to the RCPA Foundation Pathology Education Outreach Fellowship.
Events and Sponsorship Manager
Ph: +61 2 8356 5806
Fax: +61 2 8356 5828
Events and Grants Coordinator
Ph: +61 2 8356 5852
Fax: +61 2 8356 5828
Keywords: Natrium, Na
5 mL blood in lithium heparin or plain tube.
ISE, flame emission spectrophotometry.
See Table 6.
Assessment and monitoring of fluid and electrolyte status, particularly in patients with renal or cardiac disease, possible sodium losing states, and in those receiving intravenous fluids.
Sodium concentration is dependent on the state of hydration, body sodium content and water shifts between plasma and other body fluid compartments.
Intravenous therapy with isotonic saline may cause hypernatraemia and volume replacement with dextrose may cause hyponatraemia.
Hyponatraemia occurs in a small percentage of patients on diuretic therapy, particularly the elderly. Severe Hyperlipidaemia or hyperproteinaemia may cause 'pseudohyponatraemia'.
See Table 1.
Sodium is retained with mineralocorticoid excess and lost with mineralocorticoid deficiency, gastrointestinal and renal loss, or excessive sweating.
Hyponatraemia as a result of fluid retention (dilutional hyponatraemia) is seen in renal and cardiac disease and with SIADH. Urine sodium estimation may assist in interpretation; see Sodium urine.
Halperin ML and Bohn D. Crit Care Clin 2002; 18(2): 249-272.
Page last updated:
The RCPA is the leading organisation representing Pathologists and Senior Scientists in Australasia.
Its mission is to train and support pathologists and senior scientists and to improve the use of pathology testing to achieve better healthcare.
The annual scientific meeting for the RCPA which covers the scientific disciplines of Anatomical, Chemical, Forensic, Genetic, General, Haematology, Immunopathology and Microbiology.
Copyright © 2019 RCPA. All rights reserved.