i see y'all been chatting while i've been updating.
according to the info i have
vit D3 is well absorbed from oil, pill or glycerin preparations. it is not well absorbed by persons on ultra low fat diets, those with radical weight-loss surgeries or other abdominal surgeries (much of the intestine is missing) or those on pills like Alli.
d2 or d3 can be in any form, but see OP for which is best
---------- Post added at 05:17 PM ---------- Previous post was at 05:06 PM ----------
re testing controversy:
i don't believe there is any, quest sucks, plain and simple
i have long been aware of their many shortcomings. quest is the walmart of american labs. they are big, they get away with a lot. but much of what they do works and is efficient.
i don't doubt that they messed up a number of vit D tests among many other mistakes they have made over the years. the fact that they are coming out and talking about it tells me that there's mucho $$$ involved.
also remember that you dr. or the hospital, or a home health nurse, or midwife may draw the blood. what also matters is what lab will process it. not all bloodwork collected by the hospitals and offices is processed on site. it may well go off to quest or another facility. just ask
as for me, i would still get a test and hope the results are helpful.
if i were paying out of pocket anyway, i'd avoid quest though.