Independent side-by-side comparison of HK Peptides and Qing Li Peptide — third-party lab grades, tested purity, COA availability, FDA warnings, and community ratings.
Bottom line: Qing Li Peptide shows higher average tested purity (99.5% vs 98.7%); Qing Li Peptide has more published third-party tests (19 vs 5).
Every figure below is either measured by an independent laboratory or read from the vendor's own website, and the source is named against it. PeptideAtlas is not affiliated with either vendor.
HK Peptides: 5 independent Janoshik assays, across 5 substances, median measured purity 99.7%, most recent 2025-11-03. Qing Li Peptide: 19 independent Janoshik assays, across 17 substances, median measured purity 99.7%, most recent 2025-09-01.
| Attribute | HK Peptides | Qing Li Peptide |
|---|---|---|
| Independent lab grade | C | C |
| Third-party tests | 5 tests, avg purity 98.7% | 19 tests, avg purity 99.5% |
| COA available | No | No |
| Endotoxin tested | No | No |
| FDA warnings | None on record | None on record |
| Substance | HK Peptides | Qing Li Peptide |
|---|---|---|
| Tirzepatide 30mg | 99.70% (1 assay, latest 2024-09-30) | 99.81% (1 assay, latest 2025-03-20) |
| Tirzepatide 60mg | Not tested | 99.84% (3 assays, latest 2025-08-11) |
| HGH 24 IU | 95.42% (1 assay, latest 2025-11-03) | Not tested |
| KPV 10mg | 99.79% (1 assay, latest 2025-04-09) | Not tested |
| Tirzepatide 10mg | 99.70% (1 assay, latest 2024-09-30) | Not tested |
| Nad+ 500mg | purity not reported (1 assay, latest 2024-09-26) | Not tested |
| HGH 10iu | Not tested | 97.38% (1 assay, latest 2025-09-01) |
| Tirzepatide 20mg | Not tested | 99.64% (1 assay, latest 2025-08-11) |
| GLOW 70mg | Not tested | purity not reported (1 assay, latest 2025-06-26) |
| Bpc157 10mg/TB500 Fragment 10mg Blend | Not tested | purity not reported (1 assay, latest 2025-06-25) |
| Bpc157 5mg/TB500 Fragment 5mg Blend | Not tested | purity not reported (1 assay, latest 2025-06-25) |
| KLOW 80mg(BPC+TB500+GHK-CU+KPV) | Not tested | purity not reported (1 assay, latest 2025-06-02) |
| Checked | HK Peptides | Qing Li Peptide |
|---|---|---|
| Certificates of analysis | None found on the site | 15 published on the site |
| Products listed | 15 | 63 |
| Payment methods | Not stated | Cryptocurrency, Bank Transfer, PayPal |
| Ships to | United States, Europe, Worldwide | United States, Worldwide |
| Carriers | Not stated | DHL, FedEx, EMS |
| Research-use-only notice | Not stated | Published |
| Stated origin | China | Hong Kong |
Qing Li Peptide. HK Peptides: 5 independent Janoshik assays, across 5 substances, median measured purity 99.7%, most recent 2025-11-03. Qing Li Peptide: 19 independent Janoshik assays, across 17 substances, median measured purity 99.7%, most recent 2025-09-01. These are third-party Janoshik assays published against the vendor, not the vendor's own certificates.
Tirzepatide 30mg has been independently assayed for both. HK Peptides measured a median 99.70% across 1 assay; Qing Li Peptide measured 99.81% across 1. Purity reflects the lots actually tested, not every batch either vendor sells.
We found no certificates of analysis anywhere on HK Peptides' site, and Qing Li Peptide publishes 15 certificates of analysis on its own site. A published COA is the vendor's own document; the assay figures elsewhere on this page are independent of it.
HK Peptides states it ships to United States, Europe, Worldwide, and Qing Li Peptide states it ships to United States, Worldwide. Both are read from the vendors' own sites.
Full profiles: HK Peptides, Qing Li Peptide.
Full lab-test records: All 5 HK Peptides lab tests, All 19 Qing Li Peptide lab tests.
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