Which term means the absence of urine?

• A. Dysuria
• B. Filtrate
• C. Anuria
• D. Enuresis

Answer: (C)

Absence of urine is described as anuria. This term means little to no urine production, typically defined as less than about 100 mL in 24 hours, or complete lack of output. Anuria indicates a serious disruption in kidney function or urinary flow and often requires urgent medical evaluation.

Dysuria refers to pain or discomfort during urination, not the absence of urine. Enuresis is involuntary urination, such as bedwetting, usually occurring at night. Filtrate is the fluid filtered from the blood by the kidneys before it becomes urine, so it’s about the urine-forming process rather than the absence of urine.