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Methods: Vitamin B 12 test results were retrospectively collected from administrative datasets of Brazils public and private healthcare systems between 2016 and 2023
Last reviewed: May 30, 2026 Last updated: May 30, 2026 Written by: Jay Hastings, CEO of PlexusDx Jay Hastings is the CEO of PlexusDx, a precision health company focused on genetic testing, blood biomarker insights, and personalized wellness recommendations
Saydam N et al
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