In Japan, 550 is the cut off for "normal". They have higher standards than USA.
You should strive for 1000 or more since you have significant issues.
It takes time...and be sure to take that B12 on an empty stomach. There
should be nothing in your GI tract to interfere with absorption. Only a small
percentage is absorbed with each dose.
How long have you been using the B12 at 5mg range when you had your test?
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All truths are easy to understand once they are discovered; the point is to discover them.-- Galileo Galilei
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Weezie looking at petunias 8.25.2017
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