My quick calcs for the last 8 test samples for Vitamin D are;
- D2 approx 1200 IU/ml (averaged of 8 test samples)
- D3 59 IU/ml (averaged over 6 test samples that reported D3, 2 samples did not report D3)
- D3 44 IU/ml (averaged of 8 test samples)
I recommend that you put any queries you have about their product/s to them directly, that way you know you will be getting the real story (you would hope).
Use the Contact form on their web site, they will get back to you, they got back to me.
I actually asked them the following just over a week ago;
My question: "If possible, could you explain why the majority of the Vitamin D in your FCLO is D2"
Green Pasture response (in email dated 12th Jan 2012):
D2 is just one of 957 different
structures of the vitamin D hormone,
and as I stated previously, Palmitate
is just one of 160 different forms of
vitamin A. Economically, it would not
be feasible for us to test for each
one, for each product and for each
batch even if we knew what we were
looking for. Additionally,
laboratories have varying opinions on
the different forms that should be
measured. And to date, we have not
found any continuity or consistency
from lab to lab. Palmitate and D2, as
you have seen on our test result page,
are used as baseline readings for
these hormones. In nature you would
never find these metabolites isolated
and we believe our products have a
broad spectrum of these nutrients and
Other manufacturers that are
able to state the precise amount of
these metabolites are using synthetic
vitamins to do so. They know which
metabolite they have added, so they in
turn know which one to test for.
I think they slightly misinterpreted my question, i was trying to find out why D2 was in there at all, as i always thought that most D2 comes from plant sources and D3 comes from animal sources. So i was a bit confused that it can be found in cod liver oil as well.
ps. I did not bother to follow up with another email to clarify