[Marie Antoinette]

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.

[djf]

Thanks. Didn’t catch the difference...!