How long should I leave after having my vitamin B12 injection before an intrinsic factor antibodies test? Natasha Fernando 13 August 2024 14:04 Updated We recommend that you leave at least two weeks between your vitamin B12 injection and an intrinsic factor antibodies test. Related articles Do I need to fast for a cholesterol (lipids) test? Do I need to fast for an HbA1c diabetes test? Do I need to fast before my test? Venous collection information Sample collections in the heat Comments 0 comments Article is closed for comments.
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