The phrase "same sample" means using or referring to the exact identical group or object for study, testing, or analysis.
Sentences with «same sample»
Involved in testing the chemical samples provided by the clients and giving feedback on the same (resume-examples.org)
To the credit of Impact Soundworks, had I not known that these were recreations, I could have been easily convinced that these were the exact same samples from the original games. (originalsoundversion.com)
athe fact that we can not test a cancer medication on the exact same sample doesn't stop us fro calling it good enough. (religion.blogs.cnn.com)