GHK-Cu 99.8% Purity — AdvanceCertificate of Analysis · Independent third-party lab result
This COA was extracted from a community forum attachment. The original poster claimed a lab tested Advance's GHK-Cu, reporting 99.82% purity via HPLC and a 7.05% quantity overage (107.05mg tested vs 100mg label). The test is recent (3-6 months old). However, the lab's signature is not directly verifiable from this source, and the image has passed through at least one re-share, creating a chain-of-custody gap.
- chain-of-custody gap
- no endotoxin test
- unknown lab
- Test date
- 2026-01-23
- Testing lab
- Unknown
- Batch / lot
- —
- Quantity
- 107.05 mg
- Endotoxins
- —
- Assay method
- HPLC
- Label dose
- 100mg
How this result compares
This GHK-Cu certificate's tested purity of 99.82% ranks higher than 50% of the 2433 GHK-Cu certificates with a purity result we have catalogued (median 99.82%).
Tested 2026-01-23 by Unknown via HPLC. This test is newer than 35% of our catalogued GHK-Cu certificates.
Advance has 3 certificates in our corpus, including 1 for GHK-Cu at a median tested purity of 99.82%.
Test report image
Forum / Discord scrape
Artifact capturedWe have the certificate image (SHA-256 hash captured) — you can verify it loads from the upstream lab and matches the artifact shown here.
OCR text Raw extracted text
Extracted via OCR. Names, emails, phone numbers, and street addresses are auto-redacted before display.
{
"peptide": "GHK-Cu",
"dose": "100mg",
"purity_pct": 99.82,
"purity_label": "99.820%",
"method": "HPLC",
"test_date": "2026-01-23",
"client": "Advance",
"notes": "",
"label_qty": "100mg",
"tested_qty": "107.05 mg",
"quantity_deviation_pct": 7.05,
"is_blend": false,
"components_json": "",
"ocr_confidence": 1.0
}