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  2. Leukocyte esterase - Wikipedia

    en.wikipedia.org/wiki/Leukocyte_esterase

    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 ...

  3. Reference ranges for urine tests - Wikipedia

    en.wikipedia.org/wiki/Reference_ranges_for_urine...

    Reference ranges for urine tests are described below: Measurement Lower limit Upper limit Unit Urinary specific gravity: 1.003 [1] [2] 1.030 [1] [2] g/mL Urobilinogen:

  4. Urinalysis - Wikipedia

    en.wikipedia.org/wiki/Urinalysis

    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 ]

  5. Bacteriuria - Wikipedia

    en.wikipedia.org/wiki/Bacteriuria

    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.

  6. Urine test strip - Wikipedia

    en.wikipedia.org/wiki/Urine_test_strip

    The urine test strip reaction is based on the action of leukocyte esterase in catalysing the hydrolysis of an ester of indolecarboxylic acid. The indoxyl that is liberated combines with a diazonium salt in order to produce a violet coloured azole dye. [21] 1) Reaction catalysed by leukocyte esterase

  7. Urine test - Wikipedia

    en.wikipedia.org/wiki/Urine_test

    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 ]

  8. Urethritis - Wikipedia

    en.wikipedia.org/wiki/Urethritis

    In men, urethritis is diagnosed by at least one of the following: mucopurulent or purulent urethral discharge on examination, ≥ 2 white blood cells per oil immersion field from a Gram stain of a urethral swab, or positive leukocyte esterase and/or ≥10 white blood cells per high power field of the first-void urine.

  9. Urine electrolyte levels - Wikipedia

    en.wikipedia.org/wiki/Urine_electrolyte_levels

    If potassium is being lost through the kidneys, urine potassium will likely be high. If urine potassium is low, this suggests a non-renal cause. [7] Urinary calcium (Ca) – per day: 2.5: 6.25: mmol / 24 h: An abnormally high level is called hypercalciuria and an abnormally low rate is called hypocalciuria. 14637-3: 100 [8] 250 [8] mg / 24 ...