479 third-party lab reports publishedVolume pricing on every peptide, applied automatically in the cart: 3% off 2–3 · 8% off 4–5 · 12% off 6–7 · 15% off 8–9 · 20% off 10–19 · 25% off 20–29 · 30% off 30–39 · 35% off 40+ units · solvents and lab supplies excluded99.65% median purity across 272 lots257 / 257 lots pass sterility479 third-party lab reports publishedVolume pricing on every peptide, applied automatically in the cart: 3% off 2–3 · 8% off 4–5 · 12% off 6–7 · 15% off 8–9 · 20% off 10–19 · 25% off 20–29 · 30% off 30–39 · 35% off 40+ units · solvents and lab supplies excluded99.65% median purity across 272 lots257 / 257 lots pass sterility
Content audit 9 Sep 2026: lab id (blank) → V260218-22 003. Certificate prints: prints compound "GHK-Cu", lot "GHK0022026-01", lab id "V260218-22 003", content 2.56 mg
Reports for this lot
Vanguard Laboratory this report · tested March 11, 2026 · 3 results · QA approvalVanguard · issuing labAll tests passed
Test by test
3 results on the report · 3 rows computed from the per-unit values · 1 ISO 17025:2017-accredited lab · each test used up to 1 vial from this lot (rows are not added together) · every row names the chapter or house rule it follows
–Purity consistency between unitsNot on this report
no purity result printed on this lab report
✓Net peptide content (assay)Within limits
2.56 mg · 1 unit · USP <621> (procedural chapter)
–Content consistency between unitsSingle measurement
1 unit printed (2.56 mg) · a between-unit spread needs two or more measured units
✓Heavy metalsWithin limits
4 elements non-detect · 1 unit · dose-scaled limits derived from USP <232> (limits chapter)
Element
Measured
Limit
Verdict
Arsenic (As)
ND (<0.02 ppm)
15,000 ppm
Not detected
Cadmium (Cd)
ND (<0.01 ppm)
2,000 ppm
Not detected
Lead (Pb)
ND (<0.02 ppm)
5,000 ppm
Not detected
Mercury (Hg)
ND (<0.01 ppm)
3,000 ppm
Not detected
Dose-scaled limits derived from USP <232> for arsenic, cadmium, lead, mercury and chromium, using this product's configured reference quantity of 1.00 mg.
–Residual solventsNot on this lot's panel
not on this report · this batch was tested to our earlier standard; newer batches get all 15 tests
–TFA residualNot on this lot's panel
not on this report · this batch was tested to our earlier standard; newer batches get all 15 tests
–Container closureNot on this lot's panel
not on this report · this batch was tested to our earlier standard; newer batches get all 15 tests
–SolubilityNot on this lot's panel
not on this report · this batch was tested to our earlier standard; newer batches get all 15 tests
✓MicrobialWithin limits
90 CFU/g (TAC), <10 CFU/g (TYM) · 1 unit · no chapter named in the record; a screen
–ConformityNot assessable
every reported unit passed on all 3 test rows · QA approval corroborates: Vanguard Laboratory, Tori Johnson, 2026-03-11 · house check · agreement across all tests, unit to unit; QA approval corroborates
A chapter number names the method or limit a result follows; it does not describe the product. Chapters below 1000 are procedures or limits; 1000-series chapters are informational. USP <905> is the compendial test for between-unit uniformity: it assays 10 units, so a 3-unit certificate cannot yield its acceptance value — the content row is a house check with <905> named as the reference only.