Should I stop b12 injections and iron supplementation prior to a liver functional blood test and platelet count test?

[Dolansan]

Would it be recommended to stop b12 and iron supplementation prior to a blood test that analysis liver function and platelet count? If so, by how long before testing? Thank you!

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Not unless you have been told to do so.

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Not sure about the liver tests, but I also have a condition where I make too many platelets, and taking either none or high amounts of B12 has never made any difference .