Assay

An assay is a scientific test used to measure the presence, amount, or activity of a substance in a sample. It helps determine how much of a particular compound, such as a drug, mineral, or nutrient, is present. Assays are commonly used in laboratories for quality control, research, and medical diagnostics to ensure products meet specifications or to understand a sample’s composition accurately. They involve specific procedures and techniques to provide reliable, quantitative results, playing a vital role in various industries, including pharmaceuticals, environmental testing, and food safety.