colorimetric assay

A colorimetric assay is a scientific test that detects and measures the presence of a specific substance in a sample by producing a color change. When the sample reacts with certain chemicals, the resulting color's intensity correlates with the amount of the target substance. This change can be observed visually or measured with a spectrophotometer to provide quantitative results. It’s commonly used in medical diagnostics, environmental testing, and food safety to quickly and accurately identify substances based on their color responses.