I'm not a doctor, but I am a medical scientist specialising in medicines information. The four compounds taken from Raydon read to me like a recipe for an athlete to dope with:

Somatotropin - human gorwth hormone. Used medically to promote growth in people with deficiencies, or other metabolic disorders; also used by body builders to build muscle and get hyooge.
Aranesp (darbepoeitin alfa) - used to increase the number of circulating red blood cells. Medically it's used to treat anaemia, in sport it's very like what Lance Armstrong used to dope for the Tour de France.
Stanozolol - an anabolic steroid, used to increase muscle mass. Beloved of body builders.
Follistatin isn't used widely as a drug, although there's gene therapy in development. Again, it would promote muscle growth and strength.

All of those things have already been covered I think, but it's worth saying that taken as a whole, this is basically a bodybuilding stack. Someone taking all of these would likely be big, mean, tough, and have pretty great endurance. Sound familiar?