SleepDoc_PDX said:

The version of this that has an answer is narrower than the version being asked.

Adding the part of the answer the thread has not reached. Order of operations matters more than any single choice here: establish a baseline, change one thing, wait long enough for it to express itself, then measure again under the same conditions.

One 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.

A narrower follow-up, since the general answer is now clear:

Did your prescriber agree with that reading, and if not what was their objection?

Dr.PulmRoch said:

If you are comparing against somebody else’s result, check that you are comparing the same measurement taken the same way.

I read this differently from Dr.PulmRoch, on substance rather than tone. This treats a plausible mechanism as a demonstrated one. Plausible is where you start looking, not where you stop.

Dr.PulmRoch said:

If you are comparing against somebody else’s result, check that you are comparing the same measurement taken the same way.

Agreed, with the usual condition: that holds for the average and this board is a collection of individuals. A population claim and a personal prediction are different things and get quoted interchangeably.