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A few white blood cells can normally be found in the urine of healthy individuals; females tend to have slightly more than males. An increased number of WBCs is termed pyuria or leukocyturia and is associated with infection or inflammation of the urinary tract.
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 ...
Neutrophil granulocytes are the leukocytes most commonly associated with urinary infections. A positive test for leukocyte esterase normally indicates the presence of bacteria and a positive nitrite test (although it is not always the case). Infections caused by Trichomonas, Chlamydia and yeasts produce leukocyturia without bacteriuria.
Urinary specific gravity: 1.003 [1] [2] 1.030 [1] [2] g/mL Urobilinogen: 0.2 [2] 1.0 [2] Ehrlich units or mg/dL Free catecholamines, dopamine: 90 [3] 420 [3] μg/d Red blood cells (RBCs) 0 [4] [2] 2 [2] - 3 [4] per High Power Field (HPF) RBC casts: n/a 0 / negative [2] White blood cells (WBCs) 0 [2] 2 [2] pH: 5 [2] 7 [2] (unitless) Protein: 0 ...
Urinalysis is the most useful test to start the work up in a patient of dysuria. Urinalysis positive for nitrite carries a high predictive value of a positive urine culture. Also, urine dipstick showing leukocytes as equal predictive value as the presence of nitrites. When both are present, the predictive value goes even higher.
The leukocyte esterase test indirectly detects the presence of leukocytes (white blood cells) in urine which can be associated with a urinary tract infection. In the elderly, the leukocyte esterase test is often positive even in the absence of an infection.
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 ]
Glitter cells (also called Sternheimer-Malbin positive cells) are polymorphonuclear leukocyte neutrophils with granules that show a Brownian movement and that are found in the urine, most commonly associated with urinary tract infections or pyelonephritis and especially prevalent under conditions of hypotonic urine (samples with specific gravity less than 1.01). [1]
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