Systematic review assesses breath tests for diagnosing bacterial overgrowth, indicating potential diagnostic methods.
This protocol describes an updated systematic review and diagnostic test accuracy meta-analysis evaluating breath tests for the diagnosis of small intestinal bacterial overgrowth compared with duodenal or jejunal aspirate culture. The protocol was prospectively registered in OSF Registries because PROSPERO registration for diagnostic test accuracy reviews was unavailable at the time of submission.
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Collares et al. (2026) studied this question.
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