Certified Pep User Review: Great Tirz
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5.00/5 | Reviewed November 14, 2025Peptide: GLP2-T
I bought a 10-pack (kit) of 30mg Tirz from Certified Pep. I sent one vial out for independent testing (at my own cost) and it came back at 30.2mg and 99.76% purity. I've been using it for a few months and it works great. I recommend this vendor.
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