I did mine at the cop shop
They will give you a timeframe to do your PBT in. Typically its 6-8 a.m. or 7-9, they will work with you on your work schedule, just talk to them. You can do it at the Courthouse (probation department) at no charge. However, if Charlotte isn't nearby like it was not for me, there are other places you can go, such as the Eaton County sheriff substation at the corner of canal and Saginaw highway, a police station anywhere, or a place like Prevention and Treatment Services (PATS) on Saginaw highway. These will cost money, $5 was the fee 5 years ago, and their hours of testing are or can be different from the timeframe you have to test in, you have to fit their schedule, so you'll want to watch that. Probation has a handout with places you can go, their addresses and phone numbers. Ask them they'll help you out. Another option, if that really doesn't work well, is to see if they will let you get a portable PBT machine like a Soberlink. A lot more money though.
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