How long do a positive drug test stay on a cdl driver dac report?

You can always try hiring a lawyer, but if there's a reputable drug testing lab which can verify the results of your drug screening where you came up hot, your odds aren't very good at accomplishing anything. Topping it off, DAC doesn't have any safeguards for the benefit of drivers, which makes it even more of an uphill struggle.

But, in this case, it might be for the better. If you can't stay clean, you really have no business operating a CMV, anyhow.