Test in training, certainly. A bit more risky in a GT if you are a GC guy as the IRMS test is used on the top riders samples. HGH works for some, does not work for others. The tests for HGH and IGF-1 are weak but earlier this year the steroid module was added to the ABP making the use of them much more risky. Microdosing EPO, sure.....but still risky in a GT. Cortisone, without a TUE, is OK to use OOC as long as it is 8-9 prior to a race. Someday there might be a transfusion test but from what I have heard retro testing will not be possible.
Still think there are other things. Oxygen vector drugs that don't raise Hct, drugs developed for diabetes.
The top level of Pro Cycling has had a steady stream of organize doping busts. Festina, TVM, USPS, Puerto, Mantova, but in the last 4 years there have been few. Individuals? yup. Large, organized, programs. Nope.