Its not a lot of vitamin d. 10 minutes in the sun can generate 20,000ui.
When my levels were close to 500nmol/l, I felt really good, but that was from summertime exposure even on cloudy days with top off. Problem is at those levels, some consider that to be toxic and I didn't know what else my body was being depleted of more quickly than normal, but a brussel sprouts craving did develop which could have been many things including folates.
Plus what equipment was used to do these measurements? , Vitamin d testing is variable which is why the Standardization program exists and its also possible other test equipment could be variable for other measurements because different manufacturers will patent methods and these could be different to another manufacturer using a different patented method. So a standardization program needs to be established for all tests using different machines including mass spectrometry.
https://ods.od.nih.gov/Research/vdsp.aspx
Plus what equipment was used to do these measurements? , Vitamin d testing is variable which is why the Standardization program exists and its also possible other test equipment could be variable for other measurements because different manufacturers will patent methods and these could be different to another manufacturer using a different patented method. So a standardization program needs to be established for all tests using different machines including mass spectrometry. https://ods.od.nih.gov/Research/vdsp.aspx