The actual Accutane manual from Roche states that accutane (roaccutane, etc.) stays in the body for approx. 90hrs (3.75 days). And even at that point, if you've been on it for a long time, the effects won't begin to reverse, but your progress may halt until the level of accutane returns. In other words, no worries, I'm sure that you're good-to-go!!