Core Peptides vs QSC
Core Peptides scores higher, 74 to 51. The widest gap is testing & certificates. Same formula, same data fields, October 2026.
Factor by factor
| Factor | Core Peptides | QSC | Edge |
|---|---|---|---|
| Testing & certificates | 84 | 39 | Core Peptides |
| Documentation depth | 40 | 0 | Core Peptides |
| Transparency | 100 | 96 | Core Peptides |
| Track record | 44 | 57 | QSC |
| Catalog | 87 | 71 | Core Peptides |
| Pricing | 64 | 70 | QSC |
| Ordering & service | 65 | 25 | Core Peptides |
Fact sheets side by side
| Core Peptides | QSC | |
|---|---|---|
| Overall score | 74/100 (#4) | 51/100 (#27) |
| Status | Operating | Operating |
| Based in | Orlando, FL | Qingdao, Shandong |
| Founded | 2019 | 2008 |
| Third-party testing | Yes | Limited |
| Laboratories named | Vanguard Laboratory | Janoshik Analytical Laboratories |
| Public certificates | Yes | Not verified |
| Lot-specific certificates | Yes | Not verified |
| Formats | vials, blends, topical | vials, bulk |
| Catalog size | ≈104 | ≈75 |
| BPC-157 5 mg listed price | $52 | — |
| Free shipping from | $200 | — |
| Payments | card | crypto, wire |
| Ships internationally | No | Yes |
| Research-use disclaimer | Yes | Yes |
| FDA warning letter | None found | None found |
Read the full reviews: Core Peptides review · QSC review. Both suppliers sell materials labeled for laboratory research use only.
The factor that separates them
The widest gap is testing & certificates (84 vs 39). What that factor measures is explained in how to read a certificate of analysis and lot-level vs sample testing.
Related comparisons
Core Peptides vs Pure Peptide Labs · Core Peptides vs Paramount Peptides · BioLongevity Labs vs Core Peptides
Frequently asked questions
Which is better, Core Peptides or QSC?
On our formula Core Peptides scores higher (74 vs 51). The largest gap is in testing & certificates (84 vs 39). "Better" depends on what you weight; both fact sheets are on this page.
Do both publish certificates of analysis?
Core Peptides: yes. QSC: not verified. Lot-specific certificates — Core Peptides: yes; QSC: not verified.
Which is cheaper?
We could not compare a like-for-like listing; price tiers are mid (Core Peptides) and budget (QSC).