Mine was a mouth swab. I tested at the Ann Arbor location which I believe is the southeast Michigan branch.
Answered - Material handler (Current Employee) - Martinsburg, WV
If I remember correctly, I didn't need to do a drug test.
Answered - Payroll Coordinator (Operational - Data Entry) (Former Employee) - Dallas, TX
Answered - Diesel Technician (Current Employee) - Houston, TX
They used a swab test
Answered - WAREHOUSE ASSOCIATE (Former Employee) - Mechanicsburg, PA
Answered - Temporary Assembler (Former Employee) - Hudson, WI
I was given a swab onsite without prior warning. I think it is a good practice.
Answered - Administrative/Customer Service Support (Current Employee) - Montgomery, AL