When to get tested? During a routine physical or as recommended by your doctor if you are experiencing symptoms such as weakness, confusion, prolonged vomiting, or respiratory distress that could indicate an electrolyte imbalance or acidosis or alkalosis
Sample required? A blood sample drawn from a vein in the arm
This article was last reviewed on October 27, 2008.
This page was last modified on April 8, 2009.
The review date indicates when the article was last reviewed from beginning to end to ensure that it reflects the most current science. A review may not require any modifications to the article, so the two dates may not always agree.
The modified date indicates that one or more changes were made to the page. Such changes may or may not result from a full review of the page, so the two dates may not always agree.
