All negative control readings should be negative. What should positive control readings Published control values. agree with? What should you be aware for quality Manufacturer-stated limitations and interfering control of reagent strips? substances. True or False: True. Chemical readings should correlate with each other and physical and microscopic readings. What uses different reagents or Confirmatory testing. methodologies to detect the same substances as reagent strips with the same or greater sensitivity or specificity? What may be used when questionable Non-reagent testing procedures using tablets and results are obtained in confirmatory liquid chemicals. testing? What must be checked using positive Chemical reliability. and negative controls? Lungs and kidneys are major Urine pH. regulators of acid-based content in: The normal urine pH range is: 4.5 to 8.0. True or False: False. Absolute values are assigned to urine pH. First morning urine is: Slightly acidic at 5.0 to 6.0. Postprandial is more: Alkaline. What makes urine pH vary from content of the blood. patient to patient? Patient’s renal function. Presence of a urinary infection. Patient’s dietary intake. Age of specimen. What pH level is associated with aged, pH of 8.5 or above. improperly preserved specimen, and a new specimen should be obtained? What clinical significance does urine Respiratory or metabolic acidosis/ketosis pH provide? Respiratory of metabolic alkalosis tubular acidosis Renal calculi formation Treatment of UTI Precipitation/identification of crystals Determination of unsatisfactory specimens What measures pH between 5.0 and pH-Reagent Strip Reactions 9.0 in one half or one unit increments? How does the double-indicator system Methyl red for 4 to 6 with red/orange to yellow color. reaction indicate pH? Bromthymol blue for 6 to 9 with to blue color. True or False: True.
All negative control readings should be negative. What should positive control readings agree with? Published control values. What should you be aware for quality control of reagent strips? Manufacturer-stated limitations and interfering substances. True or False: Chemical readings should correlate with each other and physical and microscopic readings. True. What uses different reagents or methodologies to detect the same substances as reagent strips with the same or greater sensitivity or specificity? Confirmatory testing. What may be used when questionable results are obtained in confirmatory testing? Non-reagent testing procedures using tablets and liquid chemicals. What must be checked using positive and negative controls? Chemical reliability. Lungs and kidneys are major regulators of acid-based content in: Urine pH. The normal urine pH range is: 4.5 to 8.0. True or False: Absolute values are assigned to urine pH. False. First morning urine is: Slightly acidic at 5.0 to 6.0. Postprandial is more: Alkaline. What makes urine pH vary from patient to patient? content of the blood. Patient’s renal function. Presence of a urinary infection. Patient’s dietary intake. Age of specimen. What pH level is associated with aged, improperly preserved specimen, and a new specimen should be obtained? pH of 8.5 or above. What clinical significance does urine pH provide? Respiratory or metabolic acidosis/ketosis Respiratory of metabolic alkalosis tubular acidosis Renal calculi formation Treatment of UTI Precipitation/identification of crystals Determination of unsatisfactory specimens What measures pH between 5.0 and 9.0 in one half or one unit increments? pH-Reagent Strip Reactions How does the double-indicator system reaction indicate pH? Methyl red for 4 to 6 with red/orange to yellow color. Bromthymol blue for 6 to 9 with to blue color. True or False: True.