Has anyone here ever had blood tests return with HIGH B12 levels?!

Question: My 2yr old has rare blood disease HES. His b12 is high and climbing. I cant find much info on it. The immunologist told me that this is a "precursor to a malignancy".
Any thoughts?

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Answers: My 2yr old has rare blood disease HES. His b12 is high and climbing. I cant find much info on it. The immunologist told me that this is a "precursor to a malignancy".
Any thoughts?

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If you give me the name of the disease, I might be able to give you some information. I can't find much info on the increased amount of B12 either...... just based on the little info you gave.....

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