Posting this under the heading it deserves: Revisiting: Patterns that reliably precede a problem, documented Everything below is what sits behind that.
Patterns, from the point of view of someone who has read the documentation and is still stuck.
Saying which parts I have understood so that nobody wastes time re-explaining them, and where exactly the understanding stops.
Screenshots without provenance are the weakest form of evidence circulating here, and they travel further than anything better documented.
It cost nothing to check and would have cost something not to.
That is clearer than the version I had in my head. Thank you.
Patterns came up in a thread eighteen months ago and was answered well. I cannot find it, which is itself the problem, so here is the reconstruction.
Post #4 is right about the mechanism and I think understates the practical bit.
Patterns that reliably precede a problem: underdosing (less active material than stated, documented by independent testing), mislabelling (wrong compound, wrong strength, or wrong batch on the label), and failure to provide documentation when asked.
The arithmetic on Patterns is the easy part and it is where the errors are, which is an uncomfortable combination. Show your working and someone will catch it.
On post #7 — agreed on the reasoning, with one qualification.
Where somebody posts a concern, ask what would resolve it before arguing about it. Half of these threads end with a document nobody had asked for.
Pricing patterns: unusually low prices for what are otherwise consistent with market rates might indicate lower quality, stolen goods, or a scam. Unusually high prices without justification raise different flags.
That is what I would do. It may not be what is correct.
Picking up post #10: that is the part I would want checked first.
Patterns would be much easier to settle if anyone reported the denominator. Almost nobody reports the denominator.
I think the Patterns question is answerable and has not been answered, which is a more optimistic position than most of this thread.
Claims of pharmaceutical-grade status for research-use-only material are a labelling problem and are common enough to be worth expecting rather than reacting to.
It is the sort of thing that seems obvious in retrospect and was not at the time.
The most useful thing anyone has posted about Patterns in this category was a table of what had been measured and by whom. That is what I would want again.
Noted, and thank you for writing it out rather than summarising it.
An honest declaration on Patterns: I have a prior here and it is strong enough that you should weight what I say downward. Stating it rather than hiding it.
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