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D608 Combur 9 Test Box of 50 Teststrips D608 Combur 9 Test Box of 50 Teststrips For Testing pH; Leukocytes; Nitrite; Protein; Glucose; Ketone bodies; Urobilinogen; Bilirubin and Blood Combur-Test® strips from Roche Diagnostics Near Patient Testing are the culmination of years of targeted research and development Their unique design and the thought-out technology ensure a maximum of reliability and convenience Evaluation of results is always clear and reliable, thanks to the easy-to-read, vertical color scale on the vial label, which perfectly matches reaction colors on the test strip patches. The benefits at a glance Reliable diagnosis - Even minute pathological changes in the urine cause distinct color changes in the test fields. This makes urine testing with Combur-Test® strips the first step on the way to a reliable diagnosis in both clinics and practices. High sensitivity - Thanks to the low detection limit of Combur-Test® strips even slight pathological changes in the urine are made visible. Resistance to ascorbic acid - Combur-Test® strips are protected by iodate against ascorbic acid interference with both glucose and hemoglobin determinations eliminating virtually false-negative results and the need to recollect and retest specimens. Economic efficiency - Combur-Test® strips can be stored at room temperature up to 2 years. The integrated desiccant in the stopper cap minimizes costly reagent waste. Maximum reading convenience - Combur-Test® strips allow to simultaneously read all reagent pads between 1 and 2 minutes while the long strip handle keeps fingers clear of the specimen. Test principles: pH: The test is specific for the detection of hydronium ions, the pH being the negative common logarithm of the hydronium ion concentration. The test pad contains the indicators methyl red, phenolphthalein and bromthymol blue. Leukocytes: The reaction detects the presence of esterases that occur in granulocytes. These enzymes cleave an indoxyl ester, and the indoxyl so liberated reacts with a diazonium salt to produce a violet dye. Both intact and lysed leukocytes are detected. Nitrite: The most common organisms causing urinary tract infections, E. coli, and most urinary pathogens, convert dietary nitrate to nitrite, which produces a pink coloration of the test area. The reaction thus indirectly detects the presence of nitrite-forming organisms in the urine. The test is based on the principle of Griess‘ test and is specific for nitrite. Protein: The test is based on the principle of the protein error of pH indicators and is particularly sensitive to albumin. Quinine, quinidine, chloroquine and tolbutamide do not affect the test, nor does a high pH (up to pH 9). Glucose: The determination of glucose is based on the specific glucoseoxidase/ peroxidase reaction. Individual test areas Test principles Ketone bodies: This test is based on the principle of Legal‘s test and is more sensitive to acetoacetic acid than to acetone. Phenylketones and phthalein compounds produce red colors on the test area. These are, however, quite different from the violet colors produced by ketone bodies. Captopril, mesna (2- mercaptoethanesulfonic acid sodium salt) and other substances containing sulfhydryl groups may produce false-positive results. Urobilinogen: A stable diazonium salt reacts almost immediately with urobilinogen to give a red azo dye. The test is specific for urobilinogen and is not susceptible to the interfering factors known to affect Ehrlich‘s test. Bilirubin: The test for bilirubin is based on the coupling of bilirubin with a diazonium salt to give an azo dye. Blood: Hemoglobin and myoglobin catalyse the oxidation of the indicator by an organic H2O2 contained in the test paper. Combur-Test® strips distinguish erythrocytes from hemoglobin with separate color scales, permitting differential diagnosis of hematuria and hemoglobinuria. Furthermore, its high practical detection limit allows early detection of hematuria and hemoglobinuria. Code: D608

Online Catalogue |  Diagnostics |  Urinalysis Reagent Strips |  D608 Combur 9 Test Box of 50 Teststrips