Monitor recent or acute exposure to arsenic.

Short half-life in blood.

This test was developed and its performance characteristics determined by LabCorp. It has not been cleared or approved by the Food and Drug Administration.

Blood levels of arsenic have a short half-life and are useful only for monitoring recent or acute exposure. Urine arsenic measurement is a better measure of arsenic poisoning. In addition to pesticides, rodenticides, weed killers, paint, and wood preservatives contain arsenic.