That person had 600ng/ml of vitamin D in their blood.
Pay real close attention to what i said, i said "you want about 100ng/ml, and if more, you want vitamin K" - if that person's doctors had suspected vitamin D at any point and had them start taking K in the interim, they may have not been hospitalized so many times.
My information about vitamin D is from two decades of reading papers about it and watching experts discuss it via video and interview notes. The 100ng/ml portions are state of the art in discussions about vitamin D deficiency, as of, well, Q1 2024.
Be careful with that. Large doses of vitamin D are dangerous - and have literally been used as poison in an attempted murder: https://news.ycombinator.com/item?id=41395893