Quantitative assay

A quantitative assay is a laboratory test that measures the amount or concentration of a specific substance in a sample, such as blood, urine, or other fluids. It provides precise numerical data, allowing clinicians to assess health status, monitor disease progress, or evaluate treatment effectiveness. Unlike qualitative tests, which only indicate presence or absence, quantitative assays give detailed information about the exact level of the substance being measured, which is essential for accurate diagnosis and management.