Urine output - decreased


Decreased urine output means that you produce less than 500 milliliters of urine in 24 hours.

Alternative Names



A large decrease in urine output may be a sign of a serious, or even life-threatening, condition. However, urine output can usually be restored if you get medical treatment right away.

Common Causes

  • Blood loss
  • when you do not drink enough fluids and have vomiting, diarrhea, or feverDehydration
  • Medications such as anticholinergics, diuretics, and some antibiotics
  • Severe infection or any other medical condition that leads to shock
  • Total urinary tract blockage, such as from an enlarged prostate

Home Care

Drink as much fluid as your health care provider recommends. Your health care provider may also ask you to measure the amount of urine you produce.

Call your health care provider if

Contact your health care provider if you:

  • Notice that you are producing less urine than usual
  • Are vomiting, have diarrhea, or have a high fever and cannot get enough fluids by mouth
  • Produce less urine and have dizziness, lightheadedness, or a fast pulse

What to expect at your health care provider's office

The health care provider will perform a physical exam and ask questions about your medical history and symptoms, including:

  • Time pattern
  • Quality
  • Factors that make it worse
  • Other
  • Medical history

Tests that may be done include:



Gerber GS, Brendler CB. Evaluation of the urologic patient: History, physical examination, and the urinalysis. In: Wein AJ, ed. . 9th ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 3.

Molotoris BA. Acute kidney injury. In: Goldman L, Schafer AI, eds. . 24th ed. Philadelphia, Pa: Saunders Elsevier; 2011:chap 122.

Encyclopedia content is provided as information only and not intended to replace the advice and instruction from your personal physician.