Question: can you measure cdna concentration?
Answer: don't get stuck on measuring cDNA conc. First, you can't really measure cDNA the way most people do. If you use a nanodrop (or any other spectrophotometer based assay) after cDNA synthesis, you are not measuring cDNA but a mixture of RNAs, cDNA, and nucleotides, and without any information on degradation or quality.