If I were in your shoes I’d go to the Better You website and order a test from them. They will analyse it and send you the appropriate mouth spray with instructions of how many squarts to use per day. It will be a loading dose to start with and then a maintenance dose.
I use there sprays and got mine up to 100 in quite a short time. I’ll add the link in a moo.
All lab tests have a margin of error. It’s impossible for any test to be 100% accurate 100% of the time.
Although….. it’s only your 5th September 2023 75nmol/L (50-200) that’s the outlier at 50%. The rest are between 0-10% ish through range. (I’m guessing your recent Medichecks has a typo (should be 43.1nmol/L 50-250).)
Check my mental math tho. Did it very quickly, but pretty sure you’ve only got that one outlier.
Regards to D test consistency, it looks like the situation is even more layered than the usual margin of error too, as the different kinds of tests used have changed over the years, different labs may use different methodologies, or the same methodology with different interpretations.
Although far more nuanced than this - it’s reasonable to expect 5-10% error rate. That will account for some of the variability.
The US National Institute for Standards and Technology developed separate serum-based standard reference materials to help minimise inter-method disagreement and reduce bias. ... The first vitamin D standardisation certification program administered by the US Centers for Disease Control and Prevention is now in place. More than eight methods have achieved certification in this program including several automated, commercially available immunoassays. To achieve annual certification, tests must have a bias of ±5% (closeness to the true result) and an imprecision (reproducibility) of 10% or less.
I know - especially if like me you are trying to up dose as quickly as possible - it could have adverse effects if youre levels are actually higher than results show.
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