alleryStart learning →What is the normal range of urine pH?
AFrom 3.5 to 6.0
BFrom 5.5 to 9.0
CFrom 4.5 to 8.0
DFrom 6.5 to 7.5
Answer & Solution
Correct answer: C. From 4.5 to 8.0
1. Urine pH is not fixed; it shifts with diet and with the acid load the kidney must clear.
2. The normal range runs from a low of 4.5 to a maximum of 8.0.
3. That span covers more than a thousandfold change in hydrogen ion concentration.
4. A narrow band around neutrality would leave no room for the kidney to excrete acid or base.
_Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 25 "The Urinary System", section 25.1 Physical Characteristics of Urine_
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