Which test is used to assess accumulation of carbon monoxide exposure?

Which test is used to assess accumulation of carbon monoxide exposure?

• A. Expired breath analysis for CO
• B. Blood carboxyhemoglobin level
• C. Urine CO metabolites
• D. Saliva CO

Answer: (A)

CO is eliminated from the body mainly through the lungs, so measuring what is being exhaled gives a practical sense of the total CO burden from exposure. An expired-breath test for CO is a quick, noninvasive way to gauge how much CO has accumulated in the body during the recent exposure period, making it a sensitive indicator for ongoing or past accumulation in a workplace setting. Blood levels of carboxyhemoglobin show how much CO is bound to hemoglobin at the moment, but these levels can be influenced by the timing of exposure and clearance and require blood draws, which makes them less convenient for rapid assessment of accumulated exposure. Urine metabolites or saliva tests aren’t standard tools for assessing CO accumulation. So, the expired breath CO test is the best choice for evaluating accumulated carbon monoxide exposure.

CO is eliminated from the body mainly through the lungs, so measuring what is being exhaled gives a practical sense of the total CO burden from exposure. An expired-breath test for CO is a quick, noninvasive way to gauge how much CO has accumulated in the body during the recent exposure period, making it a sensitive indicator for ongoing or past accumulation in a workplace setting.

Blood levels of carboxyhemoglobin show how much CO is bound to hemoglobin at the moment, but these levels can be influenced by the timing of exposure and clearance and require blood draws, which makes them less convenient for rapid assessment of accumulated exposure. Urine metabolites or saliva tests aren’t standard tools for assessing CO accumulation.

So, the expired breath CO test is the best choice for evaluating accumulated carbon monoxide exposure.