To verify the concentration of the active pharmaceutical ingredients (API) to determine the effectiveness of the product to inhibit growth of microorganisms. FDA regulations require that potency testing be performed on all products prior to release and that the potency specifications on the product label conform to the actual potency of the product. We perform all potency assays according to the processes set forth in USP<81> following cGMP standards. Methodologies we use in determining antibiotic potency include the cylinder plate and the turbidimetric assays. Strict controls are employed in both methods ensuring our clients they will receive the most precise and accurate reports following analysis.