17 Questions
What is the principle behind glucose analysis?
Specific GLUCOSE-OXIDASE and PEROXIDASE
Influencing factors for glucose test strip results include all EXCEPT:
Consumption of fatty foods
What is the significance of a pH >7.0 on specific gravity test strip readings?
Reading may be too low
What does a reading of elevated glucose concentrations >1,000 mg/dL signify in test strip analysis?
It is not determined
Which enzymes are involved in the principle of bilirubin analysis?
Bilirubin-REDUCTASE and PEROXIDASE
What is the principle of the UBG test?
Reaction of urobilinogen with chromogen
What is the advantage of the Red azo dye in the UBG test?
Specific for urobilinogen
Which factor can lead to a false-negative result in the UBG test?
Exposure to direct sunlight
In the blood test, what causes the oxidation of the chromogen and change in color?
Liberation of oxygen by peroxidase activity of heme
What is the lowest detectable concentration in the blood test for intact RBCs or Free Hb?
5 INTACT RBC/UL
Which factor can contribute to a false-positive blood result in the test?
Contaminated strips
What is the end product when Glucose reacts with O2?
Gluconic acid
Which factor can lead to low or false-negative glucose results?
Metabolic products and drug metabolites with reducing action
What is the principle behind the bilirubin test using Reagent strip Chemstix?
Coupling reaction of Reagent strip Chemstix bilirubin with a diazonium reagent
Which factor can lead to false-negative bilirubin results?
Prolonged standing in direct sunlight
Which substance can lower the sensitivity of the bilirubin test?
High concentrations of ascorbic acid
What is the color change observed when Chromogen reacts with O- toluidine KI?
Pink blue
Test your knowledge on the yellow or green reaction color of the UBG test in the presence of high bilirubin concentrations, involving the MODIFIED EHRLICH ALDEHYDE reaction with urobilinogen and chromogen resulting in a red color. Learn about the specific advantages and limitations of the Urobilinogen test.
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