Not gate crashing at all.
Yes, the supplement you took will skew blood tests.
I’m reluctant to give figures, because I can’t find the research paper on it, but I looked at one study a few months ago and it was a very new study, that proved serum b12 levels could be pushed into the normal range by something as small as 3mcg? per day over a 10 day period.
And I also try and use the terms supplement and treatment interchangeably, because if you consider that the first ‘treatment’ was getting patients to eat 1/2lb of raw liver per day you can see that there is little difference between injections, tablets or food. Admittedly, the food end has to be extreme, but not to alter blood levels.
So, the serum b12 test as a diagnostic tool, can actually be damaging rather than helpful.
Yet many of the research studies rely on this method to select groups.
Yes, MCV is an indicator of b12 deficiency. And I also have started to see suggestions that the top end range is lowered. My MCV in 1991 was 99.
However, any blood test that would be an indicator of b12 deficiency is skewed after supplementation or treatment.
We are literally here having to go back to basics. We are having to learn to go back to what Murphy and Minot did. They knew the bloods were simply a ‘possible’ symptom. They knew they were rectified easily. But they also knew the other symptoms, the physical ones - the ones that get ignored today or attributed to another illness. What they did was treat each patient according to the physical symptoms.
Folate deficiency can cause the same symptoms as b12 deficiency, but they are easily reversed. However, if you have a masked b12 deficiency (as in you are taking enough b12 to rectify the bloods but not the physical symptoms) and take folate on top, all that happens is your bloods become ‘more’ normal, your homoscysteine comes down (making it more normal) but the cellular damage continues.
There is no easy answer to this.
It’s like me asking “what causes MS?” They can tell you how they currently identify it. They can tell you what the symptoms are. But they have no idea what causes it.
What we need to understand is that b12 deficiency is no less debilitating or fatal, than b12 deficiency. Once we understand that, and once we understand how similar they are, then patients have a better chance of getting an accurate diagnosis.
One way that you can ascertain a possible cause of b12 deficiency is to have a test for hypochlorhydria or achlorhydria. It has long since been known that low stomach acid is a cause of malabsorption issues. If you have either of these, then you can’t be absorbing b12 properly.