A 50% sitewide discount sounds like marketing bait. We thought the same thing — so we spent six months tracking Ascension Peptides' prices, verifying their COA documentation, and comparing the actual post-discount costs against every vendor in our database.
The short version: the discount is real, the testing is legitimate, and the prices after discount are the lowest we track on most compounds. But there are tradeoffs. Here's the full breakdown.
Who Is Ascension Peptides?
Ascension Peptides is a US-based research peptide supplier founded in 2024, operating out of Castle Rock, Colorado. They entered the market during the regulatory shakeout that took down Peptide Sciences and Amino Asylum, positioning themselves as a quality-focused alternative with aggressive pricing.
Their approach: independent third-party testing on every product, a focused catalog of high-demand compounds, and a permanent 50% discount through affiliate partnerships that undercuts nearly every competitor on effective price.
With a 4.8/5 Trustpilot rating across 88+ reviews and roughly 18 months of continuous operation, they've moved past the "too new to trust" phase — but they're still building the multi-year track record that established vendors had before the 2025-2026 shutdowns.
Product Catalog
Ascension carries peptides across the major research categories:
Weight management: retatrutide, tirzepatide Healing & recovery: BPC-157, TB-500 Growth hormone: CJC-1295, Ipamorelin, Sermorelin, Tesamorelin Immune & longevity: Thymosin Alpha-1, MOTS-C, DSIP, Selank, Semax, KPV Tanning & sexual health: Melanotan I, Melanotan II, PT-141 Metabolic: 5-Amino-1MQ, AOD-9604, NAD+ Skin & tissue: GHK-Cu
Vendor catalogs change frequently — check Ascension's site{:rel="nofollow sponsored noreferrer"} for current availability. The catalog covers the peptides most researchers actually order.
COA & Quality Testing
Ascension provides independent third-party Certificates of Analysis on their full catalog. Testing is performed through external labs — including CLIA-certified facilities — and covers purity confirmation via HPLC and identity verification via mass spectrometry.
Their COA documentation includes the underlying chromatographic data, not just a purity number. This is a step above vendors who provide a single percentage without the analytical data to back it up.
How it compares:
- EZ Peptides uses QR codes on every product linking to per-product COAs — the most convenient verification system
- Ion Peptide provides per-batch COAs with HPLC purity data, plus the broadest product format range (injectables, topicals, buccal strips)
- Ascension Peptides provides independent third-party COAs with HPLC and mass spec data — solid documentation, but not as user-friendly as EZ's QR system
All three approaches are significantly better than vendors who provide no COA or only generic certificates. Ascension's testing is legitimate — but the delivery and accessibility of that documentation isn't as polished as the competition.
Pricing
This is where Ascension stands out. Base prices are in line with the market — nothing special. But after the 50% discount, they're the cheapest verified source on almost every compound we track.
| Peptide | Ascension Base | After 50% Off | EZ Peptides | EZ After 10% Off | Vial Size |
|---|---|---|---|---|---|
| BPC-157 | $50.00 | $25.00 | $40.00 | $36.00 | 10mg |
| TB-500 | $43.00 | $21.50 | $45.00 | $40.50 | 5mg / 10mg* |
| Retatrutide | $80.00 | $40.00 | $80.00 | $72.00 | 10mg / 12mg* |
| Tirzepatide | $70.00 | $35.00 | $55.00 | $49.50 | 10mg |
| CJC-1295 | $47.50 | $23.75 | $40.00 | $36.00 | 5mg |
| Ipamorelin | $50.00 | $25.00 | $40.00 | $36.00 | 5mg |
*Vial sizes differ between vendors — check mg/vial when comparing. TB-500 is 5mg at Ascension vs 10mg at EZ. Retatrutide is 10mg at Ascension vs 12mg at EZ.
Price per mg matters more than price per vial. When you normalize for vial size:
- BPC-157: Ascension $2.50/mg vs EZ $3.60/mg — Ascension wins by 31%
- TB-500: Ascension $4.30/mg vs EZ $4.05/mg — EZ wins slightly (larger vial)
- Retatrutide: Ascension $4.00/mg vs EZ $6.00/mg — Ascension wins by 33%
- Tirzepatide: Ascension $3.50/mg vs EZ $4.95/mg — Ascension wins by 29%
For live pricing across all vendors: Full price comparison
