What is typically the target range of COHb for non-smokers?

The target range of carboxyhemoglobin (COHb) for non-smokers is typically 0-2%. This low level reflects the fact that non-smokers are not exposed to carbon monoxide (CO) from cigarette smoke or other sources, thus their COHb levels are maintained at a minimal baseline.

In clinical practice, monitoring COHb levels is essential, especially in distinguishing between smokers and non-smokers and assessing potential CO exposure. A COHb level within the range of 0-2% indicates a healthy baseline with no significant exposure to carbon monoxide, which is important for evaluating respiratory and cardiovascular health.

Higher COHb levels seen in other ranges, such as 2-5%, 5-10%, or 10-15%, would indicate either low-level exposure to carbon monoxide, concerns of smoke inhalation, or more serious carbon monoxide poisoning situations, which are not characteristic of the general population of non-smokers. Therefore, understanding the normal baseline level of COHb helps in assessing health status and potential risks related to carbon monoxide exposure.