Analyzes are done according USPS/EU pharmacopeia standards.
Those standards are internationally accepted ( and reviewed yearly by
international experts) to tests all drugs that are released in the
international markets.
Normally I should post only first page so if you do not see there
REJECTED means product is good. But because I do not want some to say
they can not believe or check I post all the pages that show full
process and all details, so anytime someone can give to a laboratory
for validation.

So if product is tested according to those standards means it has the
right concentration and does not have impurities ( other than those
accepted by USPS/EU standards ).