Definition of Cycle threshold (ct)
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Cycle threshold (ct) Definition from Law Dictionaries & Glossaries
President's DNA Initiative Glossary
Cycle number (in qPCR) at which the fluorescence generated within a reaction well exceeds the defined threshold. The threshold is arbitrarily defined by the manufacturer to reflect the point during the reaction at which a sufficient number of amplicons have accumulated.Source: The President's DNA Initiative ( About )