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How long after eradication can the blood be tested for H. pylori antibodies with any accuracy?

April 26, 2017antibodies blood eradication pylori tested

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How long after eradication can the blood be tested for H. pylori antibodies with any accuracy?

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For a blood test to accurately show eradication of H. pylori it is usual to test the antibody level at 3 and 6 months after the infection and to show that at each time point antibodies are lower than at the baseline (before treatment) level.