Do I need to take post bacc classes if I plan on taking two years off?

I recently graduated from undergrad and am planning to take two years and work in a laboratory. I am currently 22 and have already completed all of my pre req course work, and have done fairly well on them. However, I was not sure whether or not I would need to retake any of the coursework before I apply when I am 24? Any insight would be much appreciated and thank you!
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Tags: Nontraditional Students Source Type: forums