How is Nocturia Diagnosed?

You and your health care provider will want to learn the cause of your nocturia. You'll be asked about your symptoms and health history. Your health care provider may also ask you to keep a bladder diary in order to help with a diagnosis. This diary is used to keep track of things like the kind and amount of liquids you drink, trips to bathroom, etc. to track trends over a period of time which can lead to useful treatments.

Some questions your doctor may ask:

  • When did your symptoms first start?
  • How many times do you need to go to the bathroom each night?
  • Is there a large or small amount of urine when you go?
  • Has the amount of urine you make changed (increased or decreased)?
  • How much caffeine or alcohol do you drink each day? When?
  • Do you feel like you're getting enough sleep?
  • Has your diet changed recently?
  • Do you wake up wet? (Are you leaking?)


If your health care provider needs more information, you may have a:

  • Urine culture and urinalysis: check for infection, unwanted blood, and other elements in your urine.
  • Blood test: checks the kidney and thyroid, cholesterol levels and the presence of anemia, diabetes or other problems.
  • Bladder scan: shows how much urine is still in the bladder after you go to the bathroom.
  • Cystoscopy: checks for a tumor or other causes of your symptoms by having the doctor insert a narrow tube with a tiny lens inside the bladder.
  • Urodynamic testing: checks to see how well your lower urinary tract stores and releases urine.