In arterial blood gas analysis, what is a normal range for HCO3?

In arterial blood gas analysis, the normal range for bicarbonate (HCO3) is crucial for assessing a patient's metabolic status and acid-base balance. The standard reference range for HCO3 is typically between 22 and 26 mEq/L. This range reflects the bicarbonate concentration in the blood, which plays a significant role in buffering acids and maintaining normal pH levels in the body.

A bicarbonate level below 22 mEq/L may indicate metabolic acidosis, where there is an excess of acid in the body or a loss of bicarbonate, while a level above 26 mEq/L suggests metabolic alkalosis, where there may be a deficiency of acid or an excess of bicarbonate. Understanding this normal range is fundamental in clinical practice, as deviations from it can lead to serious implications regarding the patient's health status and management strategies.