NextGenPeps is the more transparent of the two on our transparency method (8.0 vs 7.4) because it names both of its labs, Janoshik and BioRegen, on every COA entry and publishes its legal entity and street address. Ascension Peptides has the easier way to find your certificate: an 85-record library you can search by lot. It also has our 50% first-order code. Neither has independent test data as of September 26, 2026. NextGenPeps is #2 and Ascension #4 in our editors' order, which isn't sorted by score.
Notice: Both vendors sell products for in-vitro laboratory research only. They are not FDA-approved and not for human or animal consumption. This comparison covers supplier transparency only, based on public documentation. We didn't purchase or test products.
Side-by-side
| Ascension Peptides | NextGenPeps | |
|---|---|---|
| Transparency score (method) | 7.4 | 8.0 |
| Entity and address | None on site; phone only | NUTRL LLC, 1331 Columbia St, San Diego, CA |
| Business age | Founded 2024, per a third-party review | Founded 2025; domain April 2025 |
| COA format | 85 records, searchable by batch/lot | ~49 dated entries with purity; some endotoxin |
| Lab named | Not on site; MZ Biolabs per independent reviews | Janoshik and BioRegen, on each entry |
| Finnrick | Profile, 0 tests | No profile |
| Coded product names | C-10, R-10, R-30, S-5, T-10, T-30 | GLP-RT, GLP-TZ, GLP-S |
| Ships to | US only | US, Puerto Rico and US territories |
| Free shipping | Not stated | Over $150 (USPS) |
| Payment | Not listed on site | Cards, PayPal, Apple Pay |
| Returns | All sales final; damage within 24 hours | Wrong items reshipped; loss/damage case by case |
| Our code | AFFILIATE50OFF (50% off first order) | None |
| FDA warning letter | None found | None found |
Sources: Ascension homepage, Ascension COAs, Ascension terms, Ascension shop, NextGenPeps homepage, NGP COA library, NGP terms, NGP shipping, NGP reship policy, Finnrick: Ascension, FDA warning letters.
COAs: lot search vs lab names
Each vendor does one half of the job well.
Ascension Peptides' COA library has 85 records you can filter by product name, SKU, batch/lot, cap color, purity and date. If you have a lot number from a vial, you can go straight to its certificate. That's why it scores higher on COA publication (9.25 vs 8.5).
NextGenPeps' COA library had about 49 entries, dated July 2025 to June 2026, each with a purity result. Some include endotoxin results, which Ascension's library doesn't advertise. The library doesn't show lot numbers or verification keys, so matching a report to your vial takes a support request.
Labs: the main gap
This is where NextGenPeps pulls ahead (8.75 vs 7.0 on lab traceability, on our 5-10 scale).
NextGenPeps says on its homepage that all products are tested by Janoshik or BioRegen, and names the lab on every library entry. Roughly three-quarters are from BioRegen. Both labs run public lookups (Janoshik, BioRegen), so you know where to check.
Ascension says "third-party tested" without naming the lab on its site. Two outside reviews trace its certificates to MZ Biolabs in Tucson, AZ: Project Biohacking, which notes HPLC-UV-MS, and PepPal, which also names SafeCert Labs. We found no lab verification link on Ascension's site.
Our COA guide explains how to confirm a report with the issuing lab.
Independent testing: a tie at zero
Finnrick shows 0 tests for Ascension and says "Not enough classifiable tests to rate this vendor yet." We found no Finnrick profile for NextGenPeps. Both get the floor score (5.0). See Janoshik vs Finnrick.
Labeling
Both have strict research-use wording. Ascension uses a 21+ age gate and says products are "Not for Human consumption of any kind." NextGenPeps' terms bar buyers from administering products to humans or animals, and its affiliate rules bar affiliates from suggesting human use.
Both lose points for code-named products, where the name doesn't say what's in the vial:
- Ascension sells six: C-10, R-10, R-30, S-5, T-10 and T-30. Its stacks also include names like "GLOW."
- NextGenPeps sells three GLP-1-class products as GLP-RT, GLP-TZ and GLP-S.
NextGenPeps scores slightly better (8.25 vs 7.5). For background, see FDA peptide regulation in 2026. We cover GLP-1-class products for research use only, with no dosing content.
Business details, shipping and payment
NextGenPeps publishes more: "NUTRL LLC ... doing business as NextGenPeps" with a San Diego street address, per its terms. It ships by USPS within 1-3 business days from California, free over $150, and lists Visa, Mastercard, Amex, Discover, PayPal and Apple Pay. Wrong items are guaranteed a reship.
Ascension lists a phone number, (303) 518-6550, and terms governed by Kansas law, but no legal entity or address. It ships only within the US and doesn't list payment methods on the pages we loaded. All sales are final, with 24 hours to report damage.
NextGenPeps scored 9.5 on business transparency; Ascension 7.0.
Reputation
NextGenPeps' Trustpilot page had 21 reviews averaging 3.1/5, split between 5-star and 1-star. PepPal reported a 4.8/5 Trustpilot score for Ascension across 100+ reviews as of May 2026, which we didn't confirm. NextGenPeps is sometimes confused with NextGen Peptides (ngpeptide.com), a separate company.
Price and codes
Ascension had BPC-157 10mg at $49 on sale (shop), and our code AFFILIATE50OFF gives 50% off a first order (last verified September 26, 2026). Its partner page says the discount can vary by partner and promotion. See the Ascension Peptides coupon code.
NextGenPeps had BPC-157 5mg at $37 on sale and offers 10% off a first order for email sign-up (shop). We have no code for it. PeptideChecked may earn a commission from either vendor. That doesn't change scores.
Which should you choose?
- If you want the lab named on every report and more business disclosure, NextGenPeps is ahead and scores higher. Visit NextGenPeps.
- If you want to find your certificate by lot quickly, or you're placing a first order and want the larger discount, Ascension Peptides fits better. Ask support which lab issued your report. Visit Ascension Peptides.
Either way, match the COA to your lot, confirm it with the lab, and watch for Finnrick data. For lab-handling unit math, use our reconstitution calculator.
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