Vitamin B12 High

[CarmenG]

I just got my blood test results my vitamin B12 is 2000H I asked my Dr. and she said it was normal I know its not, also my vitamin D is 15 low she didn't give me a prescription for that I don't know what to do.

[clivealive Forum Support]

Hi CarmenG do you have any idea why your B12 is so high? Are you taking supplements?

Can you give the ranges <from - to> for your test results?

I'm not a medically trained person but there are others on here who will be able to give you some advice if you can give more details.

[greenbexy]

Firstly, have you supplemented your B12? If you have, then yes, it would be okay. If not, then it needs investigating. Excess B12 is urinated out, but your vitamin D is really low, if the range is similar to my results. I had loading doses of 20,000units twice a week for seven weeks. Mine was 12. Ask your doctor for a prescription.

[Gambit62 Administrator]

are you being treated for B12 absorption problems - which includes PA?

If so then having a level over 2000 wouldn't be unusual, but it doesn't mean that you will feel okay.

[Cobalamin4Life in reply to Gambit62]

Hi Gambit, sorry to step in but I was looking for answers to the issue above ↑. I have PA (autoimmune gastritis) and my B12 level was over 2000 while I was fully symptomatic.

I have been trying to figure out why this happens. Do you have any resources that could explain this? (of course I have been researching it but my brain isn't optimal yet).

My doctor seems fine with prescribing injections but I have gotten a bit of opposition from his nurse who seems to have a thing for testing B12 levels.

[Cristjams in reply to Cobalamin4Life]

Have you recently tested folate levels? Low folate can also cause symptoms similar to low B12. It is possible to have normal B12 levels and low folate.

[Gambit62 Administrator in reply to Cobalamin4Life]

Cobalamin4Life most likely reason is functional B12 deficiency - a response that stops B12 passing from blood to cell when serum B12 is high.

Have you had MMA tested?

[Cobalamin4Life in reply to Gambit62]

My doctor didn't test MMA or homocysteine although the gastroenterologist suggested it. Can MMA still be tested once b12 injections have started?

[Gambit62 Administrator in reply to Cobalamin4Life]

MMA is measuring what is happening in cells and whether they have enough B12 ... if you have a functional B12 deficiency there is lots of B12 in your blood but something is stopping it getting through to/being used in cells - so it is a test that can be useful in identifying a functional B12 deficiency which may or may not be caused by treatment with B12.

[Cobalamin4Life in reply to Gambit62]

Thank you Gambit! I will put this info in my notes in case I counter any more confusion when I see the doctor again.

[Simplicity17]

Agree with Gambit62. Sounds like it could be a B12 absorption problem ~ that whatever B12 you intake is just staying in your blood and not being absorbed into muscles, nerves, etc.

[Cobalamin4Life in reply to Simplicity17]

Thank you, I was struggling with trying to understand that!