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Diseases & conditions A-Z List

Diseases & Conditions A-Z List - «U»:

  1. Urination - painful Urination - painful
    Painful urination describes any pain, discomfort, or burning sensation during urination. Considerations Pain on urination is a fairly common problem. It is most often caused by an infection somewhere in the urinary tract. Causes Candidal dermatitis or vaginitis Contact dermatitis or vulvitis In...
  2. Urine - abnormal color Urine - abnormal color
    Urine of an abnormal color appears different from the usual straw-yellow color. Abnormally-colored urine may be cloudy, dark, or blood-tinged. See also: Urine, bloody or dark Considerations Any changes in urine color, or the presence of an abnormal urine color that cannot be linked to the consumpt...
  3. Urine - bloody Urine - bloody
    Blood in your urine, or hematuria, can be classified as microscopic or gross. Microscopic hematuria is when there is very little blood in the urine and it can only be seen with a microscope. Gross hematuria is when there is enough blood in the urine that you can see it with the naked eye. Usually i...
  4. Urine 24-hour volume Urine 24-hour volume
    The urine 24-hour volume test measures the amount of urine produced in a day. How the Test is Performed A 24-hour urine sample is needed. On day 1, urinate into the toilet when you get up in the morning. Afterwards, collect all urine in a special container for the next 24 hours. On day 2, urina...
  5. Urine chemistry Urine chemistry
    Urine chemistry refers to a group of tests performed on a urine sample. How the Test is Performed For this test, a clean-catch (midstream) urine sample is needed. For more information, see: Urine collection - clean catch. Your doctor will order certain tests, which will be done on the urine sample ...
  6. Urine collection - infants Urine collection - infants
    Urine collection is a method of getting a urine sample from an infant for testing purposes. It can be done at home. How the Test is Performed Thoroughly wash the area around the urethra. If your health care provider gave you cleansing wipes, use these to clean the infant. Clean from the front to th...
  7. Urine concentration test Urine concentration test
    A urine concentration test measures the ability of the kidneys to conserve or excrete water appropriately. See also: Urine osmolality test Urine specific gravity How the Test is Performed For this test, the specific gravity of urine is measured before and after one or more of the following: ...
  8. Urine culture - catheterized specimen Urine culture - catheterized specimen
    Catheterized specimen urine culture is a test in which a urine sample is taken by inserting a catheter (a thin rubber tube) through the urethra into the bladder. How the Test is Performed A nurse or a trained technician may perform the test. First, the area around the opening of the urethra is thor...
  9. Urine culture - clean catch Urine culture - clean catch
    A clean catch is a method of collecting a urine sample for various tests, including urinalysis, cytology, and urine culture. How the Test is Performed Children or adults: After cleaning the genital area, urinate a small amount into the toilet bowl to clear the urethra of any contaminants. Then, col...
  10. Urine drainage bags Urine drainage bags
    Urine drainage bags collect urine. Your bag will attach to a catheter (tube) that is inside your bladder. You may have a catheter and urine drainage bag because you have urinary incontinence (leakage), urinary retention (not being able to urinate), surgery that made a catheter necessary, or another ...
  11. Urine drug screen Urine drug screen
    A urine drug screen is designed to detect illegal (and some prescription) drugs in the urine. See toxicology screen for information about specific drugs. How the Test is Performed It is necessary to collect a "clean-catch" (midstream) urine sample. To obtain a clean-catch sample, men or boys should...
  12. Urine melanin Urine melanin
    Urine melanin is a test to determine the abnormal presence of melanin in the urine. How the Test is Performed A clean-catch urine sample is needed. How to Prepare for the Test No special preparation is needed. How the Test Will Feel The test involves only normal urination. Why the Test is Performe...
  13. Urine odor Urine odor
    Urine odor refers to the scent of the fluid excreted during urination. Urine odor varies. However, if you drink enough fluids and are otherwise healthy, urine does not usually have a strong smell. Considerations Changes in urine odor are usually temporary. Such changes are not always a sign of dise...
  14. Urine output - decreased Urine output - decreased
    Decreased urine output is defined as producing less than 500 milliliters of urine in 24 hours. Considerations Although a significant decrease in urine output may indicate a serious, even life-threatening condition, adequate urine output can be restored with prompt medical treatment. Causes Dehydra...
  15. Urine pH Urine pH
    A urine pH test measures the acidity of urine. See also: Acid loading test How the Test is Performed A urine sample is needed. For information on collecting a urine sample, see: Clean-catch urine sample How to Prepare for the Test Your health care provider may tell you to stop taking certain drug...