Leukocyte Esterase Urine Test

Leukocyte esterase (WBC esterase) is a urine test to search for white blood cells and other signs of infection.

How Leukocyte Esterase Urine Test is Performed

A clean-catch urine sample is chosen. The clean-catch method is used to prevent germs from the penis or vagina from entering into a urine sample. To gather your urine, the health care service provider might give you an unique clean-catch set which contains a cleaning solution and sterile wipes. Follow instructions exactly so that the results are precise.

After you offer a urine sample, it is evaluated right now. The provider uses a dipstick made with a color-sensitive pad. The color of the dipstick changes to inform the service provider if you have leukocyte in your urine.

How to Prepare for WBC Esterase Test

No special actions are had to prepare for this test.

How the Test will Feel

The test will include only typical urination. There is no discomfort.

Why Leukocyte Esterase Urine Test is Performed

Leukocyte esterase is a screening test used to discover a compound that recommends there are white blood cells in the urine. This might indicate you have a urinary tract infection.

If this test is positive, the urine must be analyzed under a microscope for leukocyte and other signs that indicate an infection.

White blood cells in the urine typically indicate a urinary tract infection (UTI). Positive test results are clinically significant. The LE test is likewise used to screen for gonorrhea and for amniotic fluid infections. The combination of the LE test with the urinary nitrite test provides an excellent screen for establishing the existence of a UTI. Urine test strips (dipsticks) can evaluate for both. A urine sample that evaluates positive for both nitrite and leukocyte esterase must be cultured for pathogenic bacteria.

Normal Results of Leukocyte Esterase Urine Test

An negative test outcome is normal.

The following may produce an incorrect positive result:

  • Trichomonas infection (such as trichomoniasis).
  • Vaginal secretions (such as blood or heavy mucus discharge).

False negative tests can be triggered by:

  • High level of protein.
  • High level of vitamin C.

The examples above prevail measurements for results of these tests. Typical worth ranges may vary a little among various laboratories. Some labs use different measurements or test different samples. Talk with your doctor about the significance of your specific test results.

What Abnormal Results of Leukocyte Esterase Urine Test Mean

An unusual outcome indicates a possible urinary tract infection.

Last modified: January 17, 2019


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