Which urinalysis value should be considered abnormal?

Which urinalysis value should be considered abnormal?

• A. Urine pH 3.0
• B. Urine pH 6.0
• C. Urine protein negative
• D. Specific gravity 1.010

Answer: (A)

Urinalysis values have normal reference ranges, and staying within those ranges usually means everything is in good shape. The urine pH is typically mildly acidic and can range roughly from 4.5 to 8.0 depending on diet and metabolism. A pH as low as 3.0 is far outside that normal window and signals an abnormal finding, since it indicates extreme acidity in the urine. In contrast, a pH of about 6.0 falls well within the normal range, so it isn’t considered abnormal. Protein in urine being negative is also normal, as the presence of protein usually suggests kidney damage or a transient issue when positive. Specific gravity around 1.010 is within the usual concentration range (roughly 1.005–1.030), so that value is normal as well. So the extremely low pH of 3.0 is the abnormal value because it lies outside the normal urine pH range, while the other values align with expected normal findings.

Urinalysis values have normal reference ranges, and staying within those ranges usually means everything is in good shape. The urine pH is typically mildly acidic and can range roughly from 4.5 to 8.0 depending on diet and metabolism. A pH as low as 3.0 is far outside that normal window and signals an abnormal finding, since it indicates extreme acidity in the urine.

In contrast, a pH of about 6.0 falls well within the normal range, so it isn’t considered abnormal. Protein in urine being negative is also normal, as the presence of protein usually suggests kidney damage or a transient issue when positive. Specific gravity around 1.010 is within the usual concentration range (roughly 1.005–1.030), so that value is normal as well.

So the extremely low pH of 3.0 is the abnormal value because it lies outside the normal urine pH range, while the other values align with expected normal findings.