Adding the clinical framing, because it changes how the question reads. The distinction that resolves most of these threads is between what is true on average and what is true for one person. Both are real; they answer different questions and get quoted as if they were the same one.
Correct me if the detail matters more than I have assumed.
roxy_nash said:The distinction that resolves most of these threads is between what is true on average and what is true for one person.
Adding a me-too, because a thread of one person's experience is not much use.
roxy_nash said:The distinction that resolves most of these threads is between what is true on average and what is true for one person.
Adding the part of the answer the thread has not reached. Prices dramatically below market are the strongest single signal, and the reason is arithmetic rather than suspicion. Synthesis, testing, and cold-chain shipping have floors. A price well under the floor means something was skipped, and the two things that get skipped are testing and content.
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Shop Reference StandardsOne concrete data point for the thread. If you are comparing against somebody else’s result, check that you are comparing the same measurement taken the same way. Most of the apparent contradictions in these threads dissolve at that step.
One thing that is still open after roxy_nash’s answer:
How people are distinguishing a supplier having a bad batch from a supplier on the way out?