BLOCK-iT™ Fluorescent Oligo, for lipid transfection - FAQs

What are the positive and negative controls I should use with my Stealth RNAi siRNA experiment?

We offer several negative and positive controls for Stealth siRNA:

For Stealth Positive Control:
- Stealth RNAi siRNA GAPDH Positive Control (human) (Cat. No. 12935140, 250 µL)
- Stealth RNAi siRNA beta-Lactamase Reporter Control (Cat. No. 12935148, 250 µL)
- Stealth RNAi siRNA GFP Reporter Control (Cat. No. 12935145, 250 µL)
- Stealth RNAi siRNA Luciferase Reporter Control (Cat. No. 12935146, 250 µL)

For Stealth Negative Control:
Hi (55-65% GC), Med (45-55% GC), or Low (35-45% GC) Duplexes are offered:

- Stealth RNAi siRNA Negative Control Hi GC (Cat. No. 12935400, 250 µL)
- Stealth RNAi siRNA Negative Control Hi GC Duplex #2 (Cat. No. 12935114, 250 µL)
- Stealth RNAi siRNA Negative Control Hi GC Duplex #3 (Cat. No. 12935115, 250 µL)
- Stealth RNAi siRNA Negative Control Med GC Duplex (Cat. No. 12935300, 250 µL)
- Stealth RNAi siRNA Negative Control Med GC Duplex #2 (Cat. No. 12935112, 250 µL)
- Stealth RNAi siRNA Negative Control Hi GC Duplex #3 (Cat. No. 12935113, 250 µL)
- Stealth RNAi siRNA Negative Control Low GC Duplex (Cat. No. 12935200, 250 µL)
- Stealth RNAi siRNA Negative Control Low GC Duplex #2 (Cat. No. 12935110, 250 µL)
- Stealth RNAi siRNA Negative Control Low GC Duplex #3 (Cat. No. 12935111, 250 µL)
- Stealth RNAi siRNA Negative Control Kit (Cat. No. 12935100, contains one of each GC content level negative control, 250 µL each at 20 µM)
- For a scrambled negative control, you could also scramble your designed siRNA or Stealth RNAi sequence using the BLOCK-iT RNAi Designer.

You can also use our BLOCK-iT AlexaFluor Red Fluorescent Control (Cat. No. 14750100) or BLOCK-iT Fluorescent Oligo (Cat. No. 2013, 13750062) as a control for the transfection.

Find additional tips, troubleshooting help, and resources within our RNAi Support Center.

Can I use the BLOCK-iT Fluorescent Oligo, for lipid transfection (Cat. No. 2013) to assess transfection efficiency with Lipofectamine RNAiMAX Transfection Reagent (Cat. No. 13778100)?