5 doctors weighed in:

I am a 43-year-old man. I have a high methylmalonic acid (691) but a normal B12 (406). Folate (folic acid) was normal a few months ago. I am not anemic and my renal function is normal. Advice re next steps?

5 doctors weighed in
Dr. Steven Eisenberg
Internal Medicine - Hematology & Oncology
2 doctors agree

In brief: Repeat.

There are a number of situations which may affect levels of mma.
Elevated levels of mma can be found in patients with renal insufficiency. Suspect levels should be repeated.

In brief: Repeat.

There are a number of situations which may affect levels of mma.
Elevated levels of mma can be found in patients with renal insufficiency. Suspect levels should be repeated.
Dr. Steven Eisenberg
Dr. Steven Eisenberg
Thank
Dr. Geoffrey Rutledge
Internal Medicine
1 doctor agrees

In brief: Probably nothing

The full answer requires more information, but if your B12 levels are normal, and you have no other symptoms, you don't have B12 deficiency.

In brief: Probably nothing

The full answer requires more information, but if your B12 levels are normal, and you have no other symptoms, you don't have B12 deficiency.
Dr. Geoffrey Rutledge
Dr. Geoffrey Rutledge
Thank
Get help from a real doctor now
Dr. Dennis Higginbotham
Board Certified, Obstetrics & Gynecology
27 years in practice
49M people helped
Continue
111,000 doctors available
Read more answers from doctors