i´m going to do some qPCR. so I´ve tried to find out the amount of cDNA i can put in my qPCR. since my GOI is expect to be very low expressed i thought of RT the max amount of total RNA the manufactor recomanded for the Kit and put 1ul of this cDNA in my qPCR. If i´m correct this would mean 50ng of cDNA in my reaction.
As far as i know the amount doesn´t realy matter as long as i take the same amount in every reaktion in my experiment. I will normalize against 3 Housekeeping genes measued in the same charge of cDNA, and calculated the relative expression.
- This expression should not change when i measure the same samples with 5ng or 50ng in my reaction?
- is 50ng to much cDNA for qPCR?
- how can i compare my results with other results from the same GOI (no concentration of cDNA is mentioned in the papers)?
Somehow i have the feeling i´m missing something important...
Thanks for every suggestion!!