A little off-topic, but nanomoles per liter? We've come a long way...
That’s actually above the usually recommended levels. I think most people these days are recommending 70-90.
I take 5K-10K units per day, usually about 6 days a week.
Take a day off just to make sure I don’t overload...
There are two measuring systems for reporting Vitamin D levels in the body. With the first method, optimum serum Vitamin D levels are between 125 to 200 nanomoles per liter, and with the second scale, 50 to 80 nanograms per milliliter.
Generally in the US, we use the 2nd scale.
Because of medication errors with abbreviations, abbreviations are now forbidden in many institutions, if not all. So nanomoles is easier to write than international units.