On the subject in the title: Submitting a sample: the process end to end Working notes rather than a conclusion.
Submitting a sample keeps being re-asked here and I think that is because the answer is conditional and the conditions never travel with it.
Attempting to write the conditional version down properly. Corrections welcome and expected — I would like this to end up as a maintained page rather than a fifth thread.
Picking up post #2: that is the part I would want checked first.
My understanding of submitting a sample is a few years old and may have been superseded. If it has been, I would genuinely like to know rather than keep repeating it.
Submitting a sample: I would want to see the raw numbers rather than the summary before agreeing. Summaries lose exactly the information that would settle this.
Reading this submitting a sample thread as someone who came in with a fixed view: the third and seventh replies moved me and the confident ones did not.
It does not extend to lots nobody has seen, it is not a recommendation, and it says nothing about anything other than what was measured.
Repeat testing: if you want to verify the same lot a second time, testing with a different service strengthens the conclusion. Testing with the same service verifies reproducibility but uses the same method.
Noting that the question and the thing people usually mean by it are different.
Careful with the language on submitting a sample. "Not detected" and "not present" are different findings and the first is a statement about the method.
Submitting a sample: I have looked for the primary source twice and failed twice. Either it does not exist or it is somewhere I do not know to look, and I would like to know which.
Thank you for taking the time. That was more work than a reply usually is.
What I want from this submitting a sample thread is the list of things that would need to be true for the claim to hold. If we can write that list, we can check it.
Coming back to post #15, because the follow-up matters more than the original answer.
Adding a small correction to the submitting a sample summary above rather than a disagreement with it. The substance holds; one of the figures is out by a factor that matters.
Picking up post #15: that is the part I would want checked first.
The record shows what was measured. Everything beyond that is inference and this site tries to keep the line visible.
Not a strong opinion, just a consistent one.
I have been on both sides of the submitting a sample argument in this category within eighteen months, which should tell you how strong the evidence for either side is.
That is clearer than the version I had in my head. Thank you.
That matches what I have seen, for whatever a single anecdote is worth.
Worth separating two things that post #23 runs together.
Having read the whole submitting a sample thread before replying: the question in the first post has not actually been answered yet, and three of us have answered a nearby one instead.