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high b12, food before test

Answered on August 19, 2014
Created April 01, 2013 at 1:55 PM

1 day and 2 days before my blood test I ate turkey liver (about 300g all together). In day 3 I had blood test and it showed that my B12 is very high.

S-B12 813.8 pmol/L (141-489) H

The problem is that I have symptoms of low B12. Is it possible that those 2 meals changed results so much? Does b12 from food go to blood so fast?

So if this is a case, how many days before test I should not eat any food rich in b12? I am worried also because I am taking vitamin supplement that has 3000% RDA of vitamin b12. I started to take it right after the test. But now I received results and I am worried if I should continue to take it or not.

3ce6a0d24be025e2f2af534545bdd1d7

(26217)

on April 01, 2013
at 05:09 PM

no, you should eat your normal diet. You want your blood test to reflect the way you normally eat.

Ecac64f970460491dd99d034c2f05f0c

(20)

on April 01, 2013
at 05:04 PM

But how many days before test I should avoid food rich in b12? Because 1 meal of liver for example has already 1000% RDA. Also all those fishes and meat have it a lot. And I eat all of that every day. Should I stop it for 1 day, maybe 2, maybe all week before test?

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1 Answers

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3ce6a0d24be025e2f2af534545bdd1d7

(26217)

on April 01, 2013
at 04:00 PM

If I were you I would accept that I do not have low B12 with the current diet/ supplements you are using.

Give it a few weeks and see if your symptoms go away. If they do, you were right and you figured out how to fix it yourself <-- Awesome!

If they do not then re-test. If you are still high, low B12 is not the cause of your symptoms.

All of the B12 symptoms are also symptoms of other deficiencies

3ce6a0d24be025e2f2af534545bdd1d7

(26217)

on April 01, 2013
at 05:09 PM

no, you should eat your normal diet. You want your blood test to reflect the way you normally eat.

Ecac64f970460491dd99d034c2f05f0c

(20)

on April 01, 2013
at 05:04 PM

But how many days before test I should avoid food rich in b12? Because 1 meal of liver for example has already 1000% RDA. Also all those fishes and meat have it a lot. And I eat all of that every day. Should I stop it for 1 day, maybe 2, maybe all week before test?

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