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A member asked:

How accurate are blood tests for b12 vitamin when not fasting?

A doctor has provided 1 answer

Accurate: We pathologists are focused on labs. In testing for B12 deficiency, we're looking largely at the ability to absorb it, and perhaps at its absence in the diet (even modest vegetarians are prone to be low). A non-fasting serum B12 in the normal range would reassure me and i'd not ask for a repeat fasting.

Answered 6/24/2014

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Related Questions

A member asked:

I had a blood test for vitamin b12. It indicated a reading of 130. What does this mean?

A doctor has provided 1 answer

A member asked:

I did blood test for B12 vitamin and the result was 1617 and the normal level is 700.I need to know why is it to high and what are the risks?

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A member asked:

My vitamin B12 went from 178 to 758 on my next blood test 2 years later. Would a daily supplement really raise it that much? I am a 50 yr old woman.

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A member asked:

My body doesnt absorb B12, iron, and D. I want to know what else I dont absorb. What blood tests can I ask for? I want tests to show as many vitamins and minerals etc my body is short or high on. Full range, as comprehensive as possible?

5 doctors weighed in across 4 answers

A member asked:

A blood test showed that i'm B12 deficient. Serum B12 level of 186 pg/ml, should I take vitamin B12 supplements?

8 doctors weighed in across 2 answers

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