The most common use of these was not for big name sports athletes. It was for commercial truck drivers to pass urine tests.
Drivers of large commercial trucks are required by the DOT to pass a five panel drug test. They are tested for marijuana, meth, phencylidine, opiates, and cocaine. The thresholds are pretty high - there is no such thing as a "poppy seed positive". The tests are split specimen and cover specific protocol.
I worked ten years in the enforcement community. There are drivers out there who have used these with great success for years...
There is a big difference between the guy with the radar detector who is speeding and the guy with the whizzinator who is driving the 80,000 pound truck beside your family on the freeway while under the influence of a controlled substance.
angela