Sodium (Na) in Blood

Blood Sodium

Why It Is Done

A blood test to check sodium levels is done to:

• Check the water and electrolyte balance of the body.
• Find the cause of symptoms from low or high levels of sodium.
• Check the progress of diseases of the kidneys or adrenal glands.

Go to previous section	Go to top of page	Go to next section
Author:	Caroline Rea, RN, BS, MS	Last Updated: September 18, 2008
Medical Review:	E. Gregory Thompson, MD - Internal Medicine Avery L. Seifert, MD - Urology
© 1995-2009 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.This information does not replace the advice of a doctor. Healthwise disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. How this information was developed to help you make better health decisions.