Reply To: Pfizer Genotropin blood test results

Thanks for replying but wanted to ask you one more question in regards to that post:

Oh well, what has been said here except more so that other substances are able to cause spikes in the GH serum level so you don’t get an accurate result.

Could you, please, give a list of names of those other substances that you are talking about which yield to an increase in the serum GH blood values? Please?