How to disagree with an answer you were given, well

Practical note that does not fit anywhere else. Whatever you conclude from this topic, write down what you did and when. The single most useful thing in your own records is not any individual result; it is that they are dated and consecutive.

Picking up post #2: that is the part I would want checked first.

Disagreement-style questions: "I read this and it contradicts what I heard here, which is right?" is answerable. "Is this a bad idea?" without giving the context is not.

Coming back to the opening post, because the follow-up matters more than the original answer.

Lab result questions: state the result, the reference interval, and what else is on the same panel. A single flag on a single draw is usually uninformative without context.

Thank you for the correction. I have edited my earlier post with a note rather than silently, so the thread still makes sense to read. The error was mine and it was the kind that comes from remembering a figure instead of looking it up.

Asking a follow-up: new topic or reply in the old one? If the answer depends on the previous post, reply. If it is a question that makes sense without the previous post, new topic. The second gets faster answers.

Questions you cannot explain: "I cannot say why I am asking this, but is this compound stable at room temperature?" is more productive than no question at all. People here know that some questions cannot be asked in public and they will work with that constraint.

I read post #6 twice before replying, because I had assumed the opposite.

Avoid "any advice?" at the end. It is so generic that people do not know which part of the post it refers to. Pick the specific part and ask that specific question instead.

On post #6 — agreed on the reasoning, with one qualification.

Units. Everything needs units. This is why we ask every single time. I have seen the same arithmetic done three different ways depending on whether the person was thinking mg/mL or mg/dose or something else entirely. Stating the units makes that impossible.

Disagreeing with an answer you got: cite what you disagree with, say what contradicts it, and ask which one holds. Do not open with "I think you are wrong". Lead with the evidence.

Picking up post #9: that is the part I would want checked first.

What you have already read matters. Saying "I read the maintained page on this and I still have a gap" tells people they do not need to point you at the same resource you have already found. That is a genuine time saver.

Context that matters: compound, how long in, current dose, relevant history. Context that does not matter: how you feel, your hopes for the outcome, your medical history beyond what affects this specific question. The first set gets you answered. The second set makes the reply longer without making it better.

Five questions in one post gets you one answer: the easiest one, usually not the one you needed most. Post them separately or pick the one that depends on the others least and ask that one first.