Ascension Peptides is an operating, US-only research peptide vendor with a well-built COA library and no FDA warning letter on record as of September 25, 2026. The main gaps are independent data and ownership: Finnrick has no published tests for it, and third-party reviewers report anonymous ownership and conflicting addresses. It ranks #3 on our transparency list.
Notice: Ascension's products are sold for laboratory research only. They are not FDA-approved and not for human or animal consumption. This review covers supplier transparency only. We didn't purchase or test products.
Ascension Peptides at a glance
- Operating status: Live storefront with a working cart, checked September 25, 2026 (homepage).
- Contact: A Colorado phone number, (303) 518-6550, published on the site.
- Shipping: "Our products are shipped within the United States only," according to the site. A third-party review reports flat-rate UPS Ground at $15. We didn't confirm that price on the vendor site.
- Research-use labeling: "All products on this site are for Research, Development use only. Must be 21+ to purchase. Products are Not for Human consumption of any kind."
- Payment: Not listed on the pages we could load, so we mark it unverified.
- FDA record: No warning letter found in the FDA database.
Ascension Peptides COA: what's published
Ascension's Certificates of Analysis page is a searchable database. As of our check, it lists 85 COA records, and you can filter by product name, SKU, batch/lot, cap color, purity and date. That's one of the easier setups to use among the vendors we reviewed. If you have a lot number from a vial, you can go straight to the matching certificate.
The page itself doesn't name the lab. Two independent reviews do:
- Project Biohacking's review of 84 Ascension COAs identifies MZ Biolabs, "an independent third-party laboratory in Tucson, Arizona," using HPLC-UV-MS.
- Peptide Grades also names MZ Biolabs and reports that the certificates name the analyst.
Because both reports point to the same lab, we're fairly confident in it. We'd still like to see the lab named on the vendor's own COA page. For how to check a certificate yourself, see how to read a peptide COA.
Independent testing: none yet
Finnrick lists Ascension as a US vendor but shows "no published tests for this vendor yet" (checked September 25, 2026). That doesn't mean the products are bad. It means nobody has published an independent sample result, so the only purity evidence is the vendor's own commissioned COAs. We explain why that matters in Janoshik vs Finnrick.
Catalog labeling: code-named products
Most of Ascension's shop lists compounds by name (for example BPC-157, GHK-Cu, Epithalon, Selank). Several items appear only as short codes, though: C-10, R-10, R-30, S-5, T-10, T-30. Finnrick's page for Ascension tracks one GLP-1-class compound. In the August 2026 FDA warning letter to Peptide Partners, the agency identified similarly abbreviated product names as GLP-1-class drugs.
We don't cover or recommend GLP-1-class products. For transparency scoring, a product name that doesn't say what's in the vial counts against a vendor, and this pattern is also what regulators have focused on (background).
Business transparency
Peptide Grades flags several issues we couldn't independently resolve:
- Anonymous ownership, with no named officers or founders
- Two different addresses (Castle Rock, Colorado and Kansas City, Missouri)
- Terms of service that specify Nevis governing law
- A no-refund policy found in the terms rather than on its own page
- A founding date of 2024, so the track record is short
We couldn't load Ascension's terms page to confirm these ourselves, so treat them as third-party findings.
Trustpilot presence
Ascension has a Trustpilot profile with multiple pages of reviews. Peptide Grades reported 4.8 from 97 reviews at the time of its review. We couldn't load the live score to confirm it.
Is Ascension Peptides legit?
What's strong:
- A lot-searchable COA library with 85 records
- Two independent reviewers name the same testing lab, MZ Biolabs
- Clear research-use labeling, a 21+ requirement and US-only shipping
What's weaker:
- No independent community test data
- Code-named catalog items
- Anonymous ownership and conflicting addresses, as reported by third parties
- The lab isn't named on the vendor's own COA page
How it compares
Against Peptidology, both publish lot-level COAs. Peptidology names its labs itself, lists an address and has 16 Finnrick tests. Against Core Peptides, Ascension's COAs are much easier to search and trace to a lab. See Ascension Peptides vs Core Peptides.
What would change our score
Ascension already does the hardest part, a lot-searchable COA library. The improvements that would move it up are mostly about disclosure:
- Name MZ Biolabs (or whichever lab is used) on the COA page itself, so buyers don't need third-party reviews to find it.
- Replace code names with compound names in the catalog, so every listing says what's in the vial.
- Independent test data. Finnrick accepts community samples, and any published results would fill Ascension's biggest evidence gap.
- Consistent business details, meaning one address and named company officers.
Verdict
Ascension Peptides scores 6.4/10 on our transparency method. The COA library is good, and naming the lab on its own site would be an easy improvement. Independent test data, clear product names and named owners would each move it up. Visit Ascension Peptides to search its COA library.
Related: best peptide vendors · third-party tested peptides · peptide vendors that shut down in 2026
