I recently failed a DISA drug screening, and need to know what process I must take to get this corrected.

Stop using whatever drug you failed on. Or provide proof you should be using it via a Doctors prescription.

Corrected? This isn't a question and answer test. It's a drug screening.

You failed. What do you hope to "correct"?

EDIT: You and your son BOTH failed the test? That's unusual - https://www.askmehelpdesk.com/other-law/failed-employment-disa-drug-test-how-long-314478.html