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mrsD · 04-01-2014, 09:33 AM

Stacy here is the thread where I address your level of 4000:

http://neurotalk.psychcentral.com/ar.../t-179340.html

Quote:

mrsD
11-06-2012, 02:09 PM
There is no published evidence that high B12 levels are harmful.

Most of the people here keep their levels above 1000. There are some at 2000.

I trialed the new Puritan's pride version of methylB12 last year and got test showing 1999 ...mostly to see if the product was
labeled accurately.

The only concern with high B12 serum levels is that it may mislead the doctor, as far as the medical causes for high B12 in the face of NO supplementation. Some kidney disease, liver disease and blood diseases may raise B12 as a warning sign.

If you are using a supplement, a high level is no surprise, however. But in and of itself it is not harmful.

Any odd or suspicious test should be repeated. This would rule out lab error, or mishandling of the sample. If the red cells burst (which happens sometimes), they dump their contents which include B12 into the serum and inflate the result.

I've posted many times on NT about factitious results like this, as it is pretty common with potassium too.

But you really need to know, if you are sustaining levels of 4000 for a period of time, you need to know what your levels are without taking supplements. Since you are under a doctor's care and have been so...you should follow up on this.

Sustained high readings when no supplements are used, implies a disease state of some kind...most of them are serious.

So while the B12 is not in itself harmful, the signal of a high level may need to be followed up on.