Drug Testing For Finance Internship

I just wondered if anyone had any recent experience with finance related internships and there drug testing procedures- urine vs hair test, and time of test in relation to interview/offer/start date. Any input would be appreciated.

I had to take a drug test for a software engineering internship - they tell you when and where to take it (e.g. no later than 3 days after you sign the offer, likely so that you don’t have a chance to “clean” up), and it was a simple urine test. If you’re not on illegal drugs, you shouldn’t have to worry.

Easy answer: Don’t do drugs

Realistic answer: most employers drug test you and I have seen urine tests.