Assay

1. An Assay is an analysis done to determine the presence of a substance and the concentration of that substance such as infectious agents or antibodies. BL-B-5 Click to know more Click to know more about expert level training (Source: Business Continuity Management Institute - BCM Institute)

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2. An Assay is a quantitative or qualitative evaluation, or test, of a substance. Frequently used to describe tests of the presence or concentration of infectious agents or antibodies.

(Source: Centers for Disease Control and Prevention)