What type of sample can be used with TaqMan MicroRNA Assays?
One to ten nanograms of total RNA per 15 µL RT reaction is recommended for use with the TaqMan MicroRNA Assay. We have successfully detected miRNAs in as little as 25 pg of total RNA (~100 cells) in samples where the miRNA was highly abundant. The total RNA isolation procedure used must preserve small RNA species. We recommend the Invitrogen mirVana miRNA Isolation Kit (Cat. No. AM1560) or TRI reagent (Cat. No. AM9738).