Detection of Urinary Leukocytes by Chemstrip-L

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Abstract
Chemstrip-L was evaluated in 300 patients for its ability to detect leukocytes in urine. The strip reacts to esterases that are present in leukocytes and not in normal urine. When the chamber count is used as a standard, Chemstrip-L has a sensitivity of 95.3% and a specificity of 98%. A minimal reaction time of 15 min was confirmed. No discrepancy could be related directly to drug interference. [Leukocyturia is an important sign of inflammation of the urinary tract.].