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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

Third-party testing confirming peptide identity and purity provides assurance that the product contains what it claims

Its noteworthy that despite all those opportunities to include pretty much any chemical found in any food regulators may allow even more substances to go into supplements without proactive safety and efficacy review, Cohen says