Does this test have other names?
Microscopic urine analysis, microscopic examination of urine
What is this test?
This test looks at a sample of your urine under a microscope. It can see cells from
your urinary tract, blood cells, crystals, bacteria, parasites, and cells from tumors.
This test is often used to confirm the findings of other tests or add information
to a diagnosis.
Why do I need this test?
You may need this test to help diagnose:
Urinary tract infection
Reactions to medicines
What other tests might I have along with this test?
You may have other tests on your urine sample. These may include:
Checking the color and odor
Measuring the level of dissolved solid substances in the urine
Checking the acidity
Testing for protein, sugar, bilirubin, and other substances that may be a sign of
You may also have blood tests.
What do my test results mean?
Test results may vary depending on your age, gender, health history, and other things.
Your test results may be different depending on the lab used. They may not mean you
have a problem. Ask your healthcare provider what your test results mean for you.
Here is a sample of what certain results may mean:
A high number of red blood cells may mean that you have kidney disease, urinary tract
infection, a drug reaction, or cancer.
A high number of white blood cells may mean that you have an infection or inflammation
in your urinary tract.
A high number of cells called eosinophils may mean that you have problems in your
A high number of certain kidney cells may mean that you have kidney damage.
Substances created in the kidney, called casts, can suggest different diseases.
Abnormal crystals formed from amino acids and certain medicines can be a sign of a
variety of health problems.
How is this test done?
This test is done with a urine sample. Your healthcare provider may ask you to provide
a sample at a specific time of day, such as first thing in the morning. Or you may
collect a sample at random. For this test, you may also need to collect all the urine
you make over a certain period, such as 24 hours. For this sample, you empty your
bladder completely first thing in the morning without collecting it. Note the time.
Then collect your urine every time you go to the bathroom over the next 24 hours.
You will collect it in a container that your healthcare provider or the lab gives
Does this test pose any risks?
This test poses no known risks.
What might affect my test results?
Certain medicines can alter the appearance of urine under the microscope, including:
Your results may also be affected by:
How do I get ready for this test?
You don't need to prepare for this test. But be sure your healthcare provider knows
about all medicines, herbs, vitamins, and supplements you are taking. This includes
medicines that don't need a prescription and any illegal drugs you may use.