All natural products will display some variability. Drying them does absolutely nothing to change that, and in fact, actually degrades the quality of the active hormones.
Gibberellins are particularly suceptible to degradation, and while the analaysis may show their presence when tested, for all practical purposes, they have almost nothing to contribute once packaged, distributed, stored and retailed.
I suspect that if a company marketing a product isn't publishing the ingredients or analysis, they are likely doing so for a regulatory reason.
For example, one of the best "natural" products out there is sold as a "kelp extract growth stimulant", which renders it a "plant amendment" that is regulated at the state level. If the specific analysis is listed on the label, showing the hormones, it then becomes a "plant growth regulator" which falls under the auspices of FIFRA and the EPA - much costlier and difficult to deal with, driving up the costs to produce and sell it.
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