What is the normal range for bicarbonate levels excreted by the kidneys?

The normal range for bicarbonate levels in the blood, which reflects the kidneys’ ability to excrete and reabsorb bicarbonate, is typically around 22 to 26 mEq/L. Thus, the correct answer, which highlights a range of 26-28 mEq/L, may be seen as a slight extension of the upper limit of normal for bicarbonate levels.

Bicarbonate is crucial for maintaining the body’s acid-base balance, and the kidneys play a vital role in regulating its concentration. The bicarbonate buffer system helps neutralize acids in the body, thus maintaining a stable pH level.

Generally, while the stated range is somewhat above the commonly accepted normal, it is reasonable to consider variations based on different physiological states or measurement techniques. In practice, values around this range can also be observed under specific circumstances, making the answer plausible within certain clinical contexts. The importance of recognizing a broader normal range helps in assessing acid-base disorders, renal function, and compensatory mechanisms in critical care as well.