MEDICINE MCQ
RENAL MEDICINE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The following principle corresponds to:” The test is based on the so-called protein error of pH indicators. In the reaction zone of the strip there is a buffer mixture and an indicator that changes color from yellow to green in the presence of protein in the urine, even though the pH remains constant.”
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Ph
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Specific Gravity or Density
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Glucose
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Proteins
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Explanation:
Detailed explanation-1: -Reagent strip tests for protein are virtually (but not completely) specific for albumin, and depend upon the capacity of protein to change the color of an acid-base indicator at a constant pH maintained by a buffer in the strip section.
Detailed explanation-2: -The test is based on the principle of the “protein error” of indicators, i.e. at a constantly buffered pH, albumin reacts with a tetrabromophenol sulphonephthalein derivative resulting in a color change from yellow-green to green-blue.
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