Whats the longest wait for an employer to call you back?

Question

This is for those that have taken drug test. I heard from friends may take up to two weeks. The employer said I am hired but I am not sure when the employer will call me back to begin.

Answer 1

I live in Britain and we don't tend to have drug tests.

Answer 2

You can always call them and ask.

Answer 3

If the employer says you are hired, you are hired.