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Why should leucocyte results be verified with microscopy?

April 26, 2017leucocyte microscopy results verified

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Why should leucocyte results be verified with microscopy?

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Studies in cats show that leucocyte esterase tests are nonspecific for the detection of pyuria, which means that most urine will be positive for leucocytes when none are present. In both dogs and cats, leucocyte esterase tests are insensitive for the detection of pyuria, which means that urine can be negative for leucocytes when leucocytes are present.