Leukocyte esterase (LE) is an esterase (a type of enzyme) produced by leukocytes (white blood cells). A leukocyte esterase test (LE test) is a urine test for the existence of white blood cells and other problems connected with infection.
What Is It?
Leukocyte in the urine generally suggests a urinary tract infection (UTI). Favorable test results are scientifically substantial. The LE test is likewise utilized to screen for gonorrhea and amniotic fluid infections. The mix of the LE test with the urinary nitrite test supplies an excellent screen for establishing the existence of a UTI. Urine test strips (dipsticks) can evaluate for both. A urine sample that checks positive for both nitrite and leukocyte esterase ought to be cultured for pathogenic germs.
It has been proposed that the reagent strip for leukocyte esterase developed for the screening of urine (Combur test UX) could be a beneficial tool for detecting spontaneous bacterial peritonitis SBP. Еhe Combur test UX urine evaluating test is a very sensitive and particular approach for diagnosing SBP in the ascitic fluid of cirrhotic patients who have gone through paracentesis.
How a LE Test is Performed
A clean-catch urine sample is chosen. The clean-catch method is used to avoid bacteria from the penis or vaginal area from getting into a urine sample. To gather your urine, the healthcare company might offer you a special clean-catch set which contains a cleaning solution and sterilized wipes. Follow guidelines precisely so that the outcomes are accurate.
After you offer a urine sample, it is evaluated right now. The service provider uses a dipstick made with a color-sensitive pad. The color of the dipstick changes to tell the provider if you have leukocyte in your urine.
How to Prepare for the Test
No unique steps are needed to get ready for this test.
How the Test will Feel
The test will include just normal urination. There is no discomfort.
Why the Test is Performed
Leukocyte esterase is a screening test used to find a compound that recommends there are white blood cells in the urine. This may suggest you have a urinary tract infection.
If this test is favorable, the urine needs to be taken a look at under a microscope for white blood cells and other signs that point to an infection.
Normal Ranges for Leukocyte Esterase Test
A negative test outcome is normal.
The examples above are common measurements for results of these tests. Normal value varieties might vary a little among various labs. Some laboratories utilize various measurements or test different samples. Speak with your physician about the significance of your specific test results.
What Abnormal Results of Leukocyte Esterase Test Mean
An unusual result suggests a possible urinary tract infection.
The following may turn the test irregular even when you do not have a urinary infection:
- Trichomonas infection (such as trichomoniasis).
- Vaginal secretions (such as blood or heavy mucus discharge).
The following may turn the test even when you do have an urinary infection:
- High level of protein.
- High level of vitamin C.