URS‐11
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Catalog excerpts

URS‐11 - 1

Intended Use For the qualitative or semi‐ quantitative determination of various analytes in human urine. Principle The presence of specific compounds in urine is used to determine the approximate values of the various analytes. Reactions between chemicals on the pads and said compounds in urine, combined with certain color indicators, produce colors that correlate with the presence and concentration of the relevant analyte. See package inserts for detailed principles for each analyte. CONTACT US: TECO DIAGNOSTICS 1268 N. Lakeview Avenue Anaheim, CA 92807 Tel: 714‐463‐1111 Fax: 714‐463‐1169 Test: Urine Reagent Strip‐11 (URS‐11) Leukocytes/Nitrite/Urobilinogen/Protein/pH/Blood/SG/Ketone/Bilirubin/Glucose/Ascorbic Acid Format: Strip Method: Color Indicator Testing Procedure: Manual Storage Temperature: 15‐30°C Expected Values/Sensitivity: Ascorbic Acid: Output varies with intake. Average urinary output range 20‐30mg/day (10mg/dL sensitivity) Glucose: Concentrations as little 0.1g/dL may be significantly abnormal if found consistently (100mg/dL sensitivity) Bilirubin: No bilirubin in normal urine (0.4‐0.8mg/dL sensitivity) Ketone: No ketones in normal urine (5‐10mg/dL sensitivity) Specific Gravity: Random urine varies in specific gravity from 1.003‐1.040+ (correlates within 0.005 with values obtained from the refractive index method) Blood: No blood in normal urine (0.015mg/dL sensitivity) pH: Newborn: 5.0‐7.0; Thereafter: 4.5‐8.0 ; Average: 6.0 (quantitative differentiation of values to one unit) Protein: 1‐14mg/dL may be excreted by the normal kidney (15mg/dL sensitivity) Urobilinogen: 0.2‐1.0 EU/dL in healthy urine (0.2 EU/dL sensitivity) Nitrite: No nitrite in normal urine (0.075mg/dL sensitivity) Leukocytes: Normal urine specimens generally yield negative results (10‐15 WBC/µL sensitivity) Limitations of Procedure: Ascorbic Acid: No interferences are known. Glucose: Moderate amounts of ketone bodies (40mg/dL or greater) may decrease color development in urine containing small amounts of glucose (75‐125mg/dL). However, such concentration of ketone simultaneously with such glucose concentration is metabolically improbable in screening. The reactivity of the glucose test decreases as the specific gravity and/or ascorbic acid of the urine increases. Reactivity may also vary with temperature. Bilirubin: Reactions may occur with urine containing large doses of chlorpromazine or rafampen that might be mistaken for positive bilirubin. Indican (indoxyl sulfate) and metabolites of Lodine® may cause false positive or atypical color; ascorbic acid (25mg/dL or greater) may cause false negative results. Ketone: Color reaction that could be interpreted as “positive” may be obtained with urine specimens containing MESNA or large amounts o

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URS‐11 - 2

obtained in the presence of moderate quantities (100‐750mg/dL) of protein. Blood: The sensitivity of the blood test is reduced in urine with high specific gravity and/or high ascorbic acid content. Microbial peroxidase, associated with urinary tract infection may cause false positive reactions. pH: If proper procedure is not followed and excess urine remains on the strip, a phenomenon known as “running over” may occur, in which the acid buffer from the protein reagent are runs onto the pH area, causing a false lowering in the pH result. Protein: False positive results may be obtained with...

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