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Frequently asked questions

Our Scientific Applications Support team has assembled a list of frequently asked questions to help you find answers quickly. Filter using one or more categories to focus on specific topics, or use the search bar to perform a text search.

Are your Dicer-substrate siRNAs (DsiRNAs) provided ready to use, and do I need to order a transfection reagent separately?

DsiRNAs, which are supplied duplexed and dried, require only resuspension before use (see Resuspension of duplexed oligonucleotides). We do not sell transfection reagents but recommend using a transfection reagent to aid in DsiRNA delivery across the cell membrane.

Our scientists have had success with Lipofectamine® RNAiMax (Thermo Fisher Scientific), Oligofectamine™ (Thermo Fisher Scientific), siLentFect™ (Bio-Rad), TransIT-TKO® (Mirus Bio), and other cationic-lipid transfection products. The choice of transfection reagent depends on the cells being used.


*RUO—For research use only. Not for use in diagnostic procedures. Unless otherwise agreed to in writing, IDT does not intend for these products to be used in clinical applications and does not warrant their fitness or suitability for any clinical diagnostic use. Purchaser is solely responsible for all decisions regarding the use of these products and any associated regulatory or legal obligations.