👉 An assayable is a biological or chemical substance that can be tested and determined to be present in a sample or organism. This means that it can be measured, quantified, or identified by an instrument or method. For example, a blood test for HIV-1, which measures the presence of the virus in the bloodstream, would be considered assayable. Similarly, a chemical reaction that produces a specific product, such as a reaction between a color and a dye to produce a colorless smoke,
