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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 presence of white blood cells and other abnormalities associated with infection. White blood cells in the urine can indicate a urinary tract infection (UTI). Positive test results may ...
The test for leukocyte esterase is indicative and does not replace microscopic examination of urine. [19] It is normal to find up to 3 (occasionally 5) leukocytes per high power field (40X) in a urine sample, with women having slightly higher results owing to vaginal contamination. [citation needed] Higher numbers indicate urinary infection.
Leukocyte esterase, an enzyme found in granulocytes, is measured to estimate the concentration of white blood cells. [53] The action of the enzyme on chemicals in the test pad ends in the creation of a purple azo dye . [ 54 ]
In the elderly, the leukocyte esterase test is often positive even in the absence of an infection. [citation needed] The urine dipstick test is readily available and provides fast, but often unreliable results. Some organisms such as chlamydia and Ureaplasma urealyticum will produce a negative leukocyte esterase reaction.
Leukocytes: n/a: 0 / negative [2] See also. Reference range; Reference ranges for blood tests; References This page was last edited on 26 January 2024, at 11:14 ...
A urine test is any medical test performed on a urine specimen. The analysis of urine is a valuable diagnostic tool because its composition reflects the functioning of many body systems, particularly the kidneys and urinary system, and specimens are easy to obtain. [1]
List of human leukocyte antigen alleles associated with cutaneous conditions; List of immunofluorescence findings for autoimmune bullous conditions; List of inclusion bodies that aid in diagnosis of cutaneous conditions; List of keratins expressed in the human integumentary system; List of radiographic findings associated with cutaneous conditions
A white blood cell differential is a medical laboratory test that provides information about the types and amounts of white blood cells in a person's blood. The test, which is usually ordered as part of a complete blood count (CBC), measures the amounts of the five normal white blood cell types – neutrophils, lymphocytes, monocytes, eosinophils and basophils – as well as abnormal cell ...