Carol Johnson✓ Verified owner
June 23, 2026
took 4 days, a bit longer than advertised, but ill order again
Tirz
COA Verified
Every lot of Tirz is released only after third-party HPLC purity (≥ 99 %), mass-spec identity confirmation and LAL endotoxin testing. The full Certificate of Analysis for your lot ships with the vial.
Released · In stock at the U.S. facility
In stockShips today2–5 day U.S. delivery
What research shows
- ≥ 99 % HPLC purity — verified by a third-party lab on every lot
- U.S. synthesis — made & tested in Carlsbad, California
Why Puripep: ≥99% HPLC verified · LAL endotoxin <10 EU/mg · third-party CoA per lot · ships in insulated packaging · 2–5 day U.S. delivery
The science behind it
Tirz is supplied as a lyophilized research peptide. Dual GIP/GLP-1 metabolic peptide. Research-grade, third-party tested, shipped fast. For research use only.
Storage & reconstitution
Store the lyophilized vial at −20 °C (long term) or 2–8 °C (short term, up to 30 days). Reconstitute with bacteriostatic water at the working concentration. After reconstitution, store at 2–8 °C and use within 28 days.
Quality & release standards
Each lot is released only after passing: HPLC purity ≥ 99 %, mass-spectrometry identity confirmation, and LAL endotoxin < 10 EU/mg. Certificate of Analysis (CoA) issued per lot. U.S. synthesis (Carlsbad CA).
Research Use Only — Tirz is sold for in-vitro laboratory research and authorised professional use. Not for human or animal consumption. Not a medicinal product, supplement, food additive, or cosmetic. Customers represent they are a qualified researcher, laboratory, or institution.
- ≥ 99 % HPLC purity
- CoA on every vial
- U.S. warehouse · flat $14.99
Available doses 10 mg | 30 mg | 60 mg
Reviews
4.7277 customer reviews
5★209
4★55
3★13
2★0
1★0
Ethan T.✓ Verified owner
June 17, 2026
pretty good, ill likely order again. cheers 🙂
Tara Diaz✓ Verified owner
June 17, 2026
two days to arrive, packaging spotless
Anna A.
June 16, 2026
the cold pack was still cool when it arrived, nicely packed
Zach F.✓ Verified owner
June 15, 2026
vial in perfect shape, real solid order
Eric T.✓ Verified owner
June 14, 2026
thermal mailer with a cold pack inside, vial arrived without a scratch. good stuff
Katie P.✓ Verified owner
June 14, 2026
vial itself was solid, box was a tiny bit dinged but the vial was fine
Anonymous✓ Verified owner
June 14, 2026
pretty good, ill likely be back. quality holds up order to order, wrapping is standard
