Integrity of DNA/RNA is very important test needed according to the Europe pharmacopeia chapter 5.14.
Mostly the test can be done as agarose gel electrophoresis or using advanced techniques such as PCR or fragment analysis.
All the tests are according to the Europe pharmacopeia test 2.6.21.
To this test belong also plasmid DNA conformation test, because Stability of plasmid DNA depends on its conformation and the right conformation is required (e.g. supercoiled form).
For RNA integrity determination of RIN is important as well.