No, doing a "feel test" is not going to address many of the concerns I have with non-FDA brands of GH. Some of the well-known symptoms of GH (e.g. CTS, soft tissue edema, lethargy) may even be exaggerated when using non-FDA brands, but this does not automatically equate to them being "stronger". In fact, many of these symptoms could be signs of one's body "fighting" the substance being injected (and/or the other ingredients in the vial).
My advice is never buy Chinese hgh. You just don’t know what you are getting, you can’t garauntee the process used to make it, and with all the time it takes to go from China to Ugl to you, it’s just not worth it.
If you don’t have the cash for pharma hgh, then save your money.