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Because we see people getting their 503B vials from a vendor on Instagram or Telegram in an unlabeled bag with no quality control, dose amount or sterility issues

Last reviewed: June 8, 2026 Last updated: June 8, 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

With 99%+ purity guaranteed, industry-leading compliance, and a customer-first approach, were setting a new benchmark for peptide excellence

Many Physique26 patients already have recent labs from their GLP-1 or metabolic programs, which makes it easier to see where B12 fits in the bigger picture