Hello there, I would like to correlate the mRNA expression of a gene obtained from patient blood samples with surrogate parameters like HbA1c and data like body weight, age, etc. However, I am unsure and confused about the correct way to do it. I did not find a solution on the web so far.

Which qPCR-data should you I use (dCT, ddCT, 2^-ddCT)?

If it favorable to use log-transformed data, or does it distort the results?

Is it statistically correct to simply use an xy-graph and do a correlation analysis?

Regards!

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