To be able to test Vitamin D levels in Canada, a primary physician needs to add a valid reason or it will be rejected by the lab.
Adding: chronic loose stools in the foot notes of the referral seems to work very well. Welcome to Health Canada.
Make sure you read the comments…………
https://x.com/BioavailableNd/status/1881772353056920025
AND
Doseage levels??????????
How many IU/day would it take to get into 250 nmol/L danger zone??