Why the Test is Performed. Leukocyte esterase is a screening test used to detect a substance that suggests there are white blood cells in the urine. This may mean you have a urinary tract infection. If this test is positive, the urine should be examined under a microscope for white blood cells and other signs that point to an infection. Jul 19, 2021 · Leukocyte esterase is a screening test used to detect a substance that suggests there are white blood cells in the urine. This may mean you have a urinary tract infection. If this test is positive, the urine should be examined under a microscope for white blood cells and other signs that point to an infection. Dec 19, 2023 · However, it often ranges between 4,500 and 10,000 per microliter. In the case of a pregnant woman in her third trimester, WBC of between 12,000 and 18,000 per mcL is still normal. High white blood cell count in pregnancy is common as the body’s immune system adjusts to support the woman and her unborn baby. Production of white blood cells In accordance with the Urology Department at PCH the following can be used as a guideline for the presence or RBCs in urine samples: i. 0-5 RBC (x10*6/L) rather than RBC/ul ii. 5-25 RBC (x10*6/L) rather than RBC/ul iii. >25 RBC (x10*6/L) rather than RBC/ul. However, this should only be used as a guide due to the factors stated. Jan 12, 2018 · The non-hemolyzed blood in urine causes during pregnancy may sometimes be due to bleeding of the cervix caused by lovemaking in the initial stages of pregnancy. However, it has to be investigated further because it could be a sign that the pregnant woman is in danger of a miscarriage. In the later stages of pregnancy, the presence of At The Cat's Meow, the first step of a UA is measuring the specific gravity on a refractometer. The urine is next tested using a "dipstick" to check for the presence of glucose, bilirubin, ketones, protein, and blood as well as the pH. The urine is then centrifuged and the sediment is examined under a microscope for cells (RBCs, WBCs
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