Get your D3 tested. Shoot for 75 ng/ml. You get there by taking 10000 D3 daily. And it costs $2 less than last year. Or take one every other day to make it 5000 D3 daily
https://www.amazon.com/Carlyle-Vitamin-Softgels-Promotes-Supplement/dp/B07GRBQY5B
If I get to 90 ng/ml that’s OK with me. But my last test came in at 75
- - - - - - -
Vitamin d tests are inaccurate when people have more than 32
ng/ml.
There are accurate vitamin d tests people do in research labs. The vitamin d tests people do measure vitamin d and inactivated vitamin d.
A person had a vitamin d result of 55 ng/ml. He only had half of that. This information is in the article
Low Vitamin D Status despite Abundant Sun Exposure
on page 2133
Sorry, that information is on page 2132, figure 4.
What book is this?