Why get tested? As part of a general health checkup, to determine your nutritional status or to screen for certain liver and kidney disorders as well as other diseases
When to get tested? When you have a routine physical exam or if you experience unexpected weight loss or fatigue or if your doctor thinks that you have symptoms of a liver or kidney disorder
Sample required? A blood sample drawn from a vein in your arm or by fingerstick (adults and children) or heelstick (newborns)
This article was last reviewed on May 16, 2009.
This page was last modified on May 16, 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.
