Which of the following is an anionic dye that binds selectively with albumin?

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Enhance your knowledge with the Ciulla Clinical Chemistry Test. Study with interactive quizzes, featuring flashcards and multiple-choice questions. Each question offers hints and explanations for better understanding. Prepare effectively and excel in your exam!

Multiple Choice

Which of the following is an anionic dye that binds selectively with albumin?

Explanation:
Dye-binding assays rely on a dye that forms a colored complex with a specific protein to measure its concentration. Bromcresol green is an anionic dye chosen for albumin because it binds albumin with higher affinity than many other plasma proteins, producing a distinct color change that can be measured spectrophotometrically. This makes it useful for selectively quantifying albumin in serum. The other stains work differently: some are general protein stains used for gels or membranes and don’t favor albumin, so they don’t provide the selective measurement that bromcresol green offers.

Dye-binding assays rely on a dye that forms a colored complex with a specific protein to measure its concentration. Bromcresol green is an anionic dye chosen for albumin because it binds albumin with higher affinity than many other plasma proteins, producing a distinct color change that can be measured spectrophotometrically. This makes it useful for selectively quantifying albumin in serum.

The other stains work differently: some are general protein stains used for gels or membranes and don’t favor albumin, so they don’t provide the selective measurement that bromcresol green offers.

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