That is outrageous. For someone who considers B12 deficiency (and knows about MMA and Hcy) and knows you have serious symptoms to delay is especially shameful.

You don't "wait a couple of weeks" and test again. You do the MMA and Hcy immediately. If I were you, I would insist that the blood be drawn for those two tests no later than Monday, and on the way out of the lab I would start my oral B12 in doses of no less than 1000 mcg (I would take 5000 mcg methylcobalamin). And I would keep up the B12 for a very long time, since it is safe but deficiency is terribly damaging and those two tests do not catch a percentage of cases.

If I couldn't get that, I would start the methylcobalamin today.

It is shameful, but many hemotologists do not know anything about B12 developments within the last 35 years. And it is apparent that that one knows less than most. To not know that a large dose in a swallowed or dissolved tablet will help means the doc is over 30 years behind. To think that B12 deficiency can't make a person exhausted makes the doc hopeless, in my opinion.

rose