Relentless Precision. Intelligent Value.
Research-use-only reference standards
Precision in every peptide.
USA-sourced, USA-synthesized research peptides — every lot third-party tested in an ISO/IEC 17025-accredited lab.
- USA-sourced & synthesized in the USA
- ≥99% peptide purity, guaranteed
- USA ISO 17025-accredited lab COA
- Most orders ship within 24 hours.
Fall Into Savings Precisely Peptides, now through October 10
Buy one,
get one free.
Across your whole cart, now through October 10. The higher-priced half of your vials is paid and the lower-priced half is free, applied automatically in your cart, no code.
One offer, the better one: when a coupon or bulk pricing saves more, the cart uses that instead.
- Third-party tested
- Made in USA
- Batch COA
- Research use only
The catalog
Research peptides & reference standards
Every peptide we ship carries a lot-specific Certificate of Analysis. Strictly for in-vitro laboratory research.
GHK-Cu
GHK-Cu (copper-complexed tripeptide, MW ~403 Da, CAS 89030-95-5). Copper
MOTS-c
MOTS-c (C₁₀₁H₁₅₂N₂₈O₂₂S₂, 16aa mitochondrial-derived peptide, MW ~2,175 Da, CAS
Six reasons researchers choose Precisely Peptides
Every line below is something you can check — on a certificate, on a product page, or in the box.
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99%+
Purity, verified
HPLC-tested against spec by a USA-based, ISO/IEC 17025-accredited third-party laboratory.
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USA
USA-based business, USA-synthesized peptides
All Precisely Peptides research peptides are USA-sourced and synthesized in the USA. Precisely Peptides is a USA-based business — we pack and ship from the United States and sell to U.S. customers only.
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4×Precision7×Black Label
Every lot tested — four ways, seven on Black Label
Precision clears identity, purity, net peptide content and a fentanyl screen on every lot. Black Label adds heavy metals, sterility and endotoxin testing. See what Black Label adds
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Every lot
Lot-specific certificates of analysis
Sign in free to open the full certificates. Open the COA library — account needed
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24hr
Most orders ship within 24 hours
Weekend orders ship Monday. Free standard shipping at $100+, free priority at $250+ — and free loss-and-damage protection in transit on every order.
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30day
Satisfaction guaranteed — we make it right
Return any unopened, factory-sealed vial within 30 days for a full refund, no restocking fee. If an order arrives damaged or incorrect, we replace it and cover the return label. Read the Precisely Promise
For research use only. Not for human consumption. All products are sold strictly as reference standards for in-vitro laboratory research and are not drugs, foods, or supplements.
Precisely Peptides
4.8
Good company to work with
Good company to work with, answered all my questions and made contact back with me quickly. Would recommend
Quick to respond
If I have any questions she’s quick to respond and answer or direct me where to find it.
Quick and easy shipping
Quick and easy shipping. Great discount. Packaging is solid. Thanks again!
