Measurement of urine osmolality is a more accurate measure of renal concentrating ability than specific gravity because:
A) Osmolality is measured by instrumentation
B) Specific gravity is not influenced by urea and glucose molecules
C) Osmolality is influenced equally by small and large molecules
D) Specific gravity measures only urea and glucose molecules

Question

Quizplus · Accepted Answer

Osmolality measures the concentration of all solute particles in a solution, regardless of size, providing a more accurate assessment of renal concentrating ability compared to specific gravity, which can be influenced by the size and weight of solute molecules.

Measurement of Urine Osmolality Is a More Accurate Measure of Renal