What is the normal urine specific gravity range, which would be low in cases of diabetes insipidus?

What is the normal urine specific gravity range, which would be low in cases of diabetes insipidus?

• A. 1.000 to 1.002
• B. 1.003 to 1.007
• C. 1.001 to 1.003
• D. 1.005 to 1.010

Answer: (C)

The normal urine specific gravity range typically falls between 1.005 and 1.030, with lower values indicating more diluted urine. In cases of diabetes insipidus, where there is a deficiency of antidiuretic hormone (ADH) or a lack of kidney response to it, the kidneys cannot concentrate urine effectively. This results in higher urine output with a correspondingly low specific gravity. Choosing the range of 1.001 to 1.003 would indicate a very diluted urine, which is consistent with what is observed in diabetes insipidus, thus highlighting its inability to concentrate urine properly. Lower specific gravity values indicate that the kidneys are excreting large volumes of dilute urine, consistent with the pathophysiology of diabetes insipidus. While other options provide ranges that can also reflect diluted urine, they do not align as closely with the extreme dilution seen in diabetes insipidus as the selected range does. This understanding is crucial for recognizing the clinical implications and diagnosing conditions associated with urine concentration abilities.

The normal urine specific gravity range typically falls between 1.005 and 1.030, with lower values indicating more diluted urine. In cases of diabetes insipidus, where there is a deficiency of antidiuretic hormone (ADH) or a lack of kidney response to it, the kidneys cannot concentrate urine effectively. This results in higher urine output with a correspondingly low specific gravity.

Choosing the range of 1.001 to 1.003 would indicate a very diluted urine, which is consistent with what is observed in diabetes insipidus, thus highlighting its inability to concentrate urine properly. Lower specific gravity values indicate that the kidneys are excreting large volumes of dilute urine, consistent with the pathophysiology of diabetes insipidus.

While other options provide ranges that can also reflect diluted urine, they do not align as closely with the extreme dilution seen in diabetes insipidus as the selected range does. This understanding is crucial for recognizing the clinical implications and diagnosing conditions associated with urine concentration abilities.