Exogenous control

/Exogenous control

Exogenous control

2017-12-05T09:37:41+00:00December 5th, 2017|

This is a characterized RNA or DNA spiked into each sample at a known concentration. An exogenous active reference is usually an in vitro construct that can be used as an internal positive control (IPC) to distinguish true target negatives from PCR inhibition. An exogenous reference can also be used to normalize for differences in efficiency of sample extraction or complementary DNA (cDNA) synthesis by reverse transcriptase. Whether or not an active reference is used, it is important to use a passive reference dye (usually ROX) in order to normalize for non-PCR-related fluctuations in fluorescence signal.

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