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Input Mass

Definition

Input mass is the estimated amount of DNA introduced into a downstream reaction, determined from the extract concentration and volume added under the measurement method. It differs from concentration and does not by itself establish target quality or amplification success.

Context
DNA measurement

For example, changing the volume added to a reaction changes estimated input mass even when the extract’s concentration stays the same.

Concentration, input mass and amplification behaviour are different quantities. A lower or higher cycle value is not a universal direct measure across assays without appropriate calibration.

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