What is the normal range for urine specific gravity and what do high or low values indicate?

What is the normal range for urine specific gravity and what do high or low values indicate?

• A. Approximately 1.020–1.040; high indicates infection
• B. Approximately 1.000–1.010; low indicates dehydration
• C. Approximately 1.003–1.030; high indicates dehydration or concentrated urine; low indicates dilute urine or inability to concentrate
• D. Approximately 1.050–1.070; normal

Answer: (C)