Time limit between CI screening and poly

Does a CI polygraph (for the DOD) have to be conducted in a certain amount of time after the CI screening? Seems like the screening would only be good for X number of months before it has to be redone.

I’ve never heard of any such limit. I’m not sure all positions require a CI screening, I thought it was sort of an as-needed thing.

Makes sense. I was told from the start that mine does. They also skipped a lot of questions that pertained to naturalized citizens.