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A member asked:

Does a b12 test require serum or plasma?

A doctor has provided 1 answer
Dr. Kelty Baker answered

B12 testing: Testing for vitamin B12 deficiency is done on serum samples.

Dr Turrisi and another doctor agreed

Answered 6/24/2014

5.9k views

Thank
Show 1 more comment

Related Questions

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

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I have Thalassemia minor it Skews FBC test I had Ferritin and folate Iron test and B12 all Ok. Serum Ferritin is 12 ug/L range 12-250ug/L Normal?

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Have started Zantac 300 (ranitidine) to be taken for 1 month I Have a Blood Test FBC ,Serum Folate, (folic acid) Serum B12 can this medication interfere with it?

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A member asked:

Is there a test to measure intracellular level B12? Some variants transcobalamin II are ineffective in transporting it across the cell membrane even when serum levels are normal. A functional deficiency. Test would help determine treatment?

3 doctors weighed in across 2 answers

A member asked:

Serum glucose is 2.2 doctor said borderline so need fasting blood test. What is this? and could this be related to B12 deficiency?

A doctor has provided 1 answer

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