I guess it's just not something they advertise, with good reason.
You know, every time I've gotten a prepurchase exam, I've asked for bloodwork to check for drugs. I guess it never occured to me that the drugs could be nearly 30 days in the system.
Me either. If I could give it once a month, I wonder if I'd almost have a child's pony ;~D
I think I remember hearing about tranquilizers that stay in system for a long time at the rides I use to compete in. I don't know how effective they stay, but residue stays and will show up in a drug test and get you disqualified.
Becky