Ya, Di's brother does obesity research down in NZ, and he's got access to a DEXA machine.
We ran her through that awhile back, and even that has a pretty sharp margin of error based on the operator and other crap like that.
Really there's no way short of autopsy to accurately measure BF%, which sucks, but it is what it is.
I guess the bio-impedence stuff is probably just as good as anything at the end of the day, you just have to measure trends in change over time instead of focusing on the actual number
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