CarlaRPh_TPA said:

Most of what circulates confidently in this community traces back to one summary of one study, and the qualifier was dropped somewhere in the third…

That is right for the common case. Whether it is right for the case being asked about depends on a detail that has not been given.

That is the short version; the long version is somebody else's post.

Dr.NateNeph said:

Agreed on the target, with the caveat that reference weight and current weight are different numbers.

Genuinely useful, thank you. I had the facts and not the framework. I will report back once I have actually tried it.

CarlaRPh_TPA said:

Most of what circulates confidently in this community traces back to one summary of one study, and the qualifier was dropped somewhere in the third…

This is where I part company with the consensus forming above. The objection nobody has made: this only works if the measurement is doing what we assume it is doing, and that assumption has not been tested here.

Adding the numbers, since they settle part of this. The boring version of this is the one that works, and the boring version is: measure a baseline, change one variable, wait, measure again under the same conditions. Nobody wants that answer and it is still the answer.

Moderator note: a post naming a supplier has been edited. Discuss suppliers in the review sections, not here. Report rather than reply if it drifts again.