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MedlinePlus is a service of the National Library of Medicine (NLM), the world's largest medical library, which is part of the National Institutes of Health (NIH). It was built as an online health information resource for patients and their families and friends.

MedlinePlus presents high-quality, easy to understand, relevant health and wellness information that is trusted.

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MedlinePlus at a Glance

  • Offers information on health topics, human genetics, medical tests, medications, dietary supplements, and healthy recipes.
  • Sourced from more than 1,600 selected organizations.
  • Provides 40,000 links to authoritative health information in English and 18,000 links to information in Spanish.
  • In 2018, 277 million users viewed MedlinePlus more than 700 million times.

Urinalysis

A urinalysis is a test of your urine. It is often done to check for a urinary tract infections, kidney problems, or diabetes. You may also have one during a checkup, if you are admitted to the hospital, before you have surgery, or if you are pregnant. It can also monitor some medical conditions and treatments.

A urinalysis involves checking the urine for:

  • Its color
  • Its appearance (whether it is clear or cloudy)
  • Any odor
  • The pH level (acidity)
  • Whether there are substances that are not normally in urine, such as blood, too much protein, glucose, ketones, and bilirubin
  • Whether there are cells, crystals, and casts (tube-shaped proteins)
  • Whether it contains bacteria or other germs



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