Drug Test Question

I recently got offered a position at a relatively small company and neither the job description or offer letter mention anything about a drug test. The business isn't in an industry like transportation, safety, defense, etc. that requires a mandatory drug test.

How likely is it that a company will drug test if they don't mention it in the job description or offer letter? Recreational use of Marijuana is legal where I live but I know companies can still test for it. I use it for medical purposes but don't have a medical card.

I already know that it's better to be safe than sorry, but I'd still like to hear everyone's opinion.

usa jobs
usa jobs resume
usa hotel jobs
usajobs
usa jobs federal government
usa job in ksa
usa jobs
usa jobs login
usa jobs gov
usajobs.gov
www.usajobs.gov
usajobs.com
usajobs
usajobs.gov official