451 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 excluded99.58% median purity across 255 lots243 / 243 lots pass sterility451 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 excluded99.58% median purity across 255 lots243 / 243 lots pass sterility
Batch 1681 · tested May 22, 2026 (136 days ago) · released May 25, 2026 Discontinued variant
All tests passed
Batch
#1681 13 tests
Mass
98.11 mg
Purity
>99.80%
Issuing lab accreditation
Vanguard · ISO 17025:2017 / A2LA #6377.01.01
3 units tested for purity, each printed >99.80% · net peptide content 97.63 / 98.06 / 98.64 mg
Conformity: Units agree — every reported unit passed on all 9 test rows · purity spread at most 0.20 pt within the house limit · content spread 1.0% within the house limit · QA approval corroborates: Vanguard Laboratory, Tori Johnson, Operations Manager, 2026-05-22
Three vials (A, B, C) tested for most analyses. Sterility testing performed by Eagle Analytical Services Inc. No Method Suitability on file for ScanRDI sterility test.
Content audit 9 Sep 2026: lab id (blank) → V260513-13 003. Certificate prints: prints compound "GHK-Cu", lot "1681", lab id "V260513-13 003", content 97.63 / 98.06 / 98.64
9 results on the report · 3 rows computed from the per-unit values · 2 labs · each test used up to 3 vials from this lot (rows are not added together) · every row names the chapter or house rule it follows
✓Purity consistency between unitsWithin house limit
3 units, each above 99.80% (the lab's reporting bound) · units differ by at most 0.20 pt · house limit · caution past 0.50 pt, outside past 1.00 pt · per-unit USP <621> results
✓Content consistency between unitsWithin house limit
3 units: 97.63 / 98.06 / 98.64 mg · spread 1.01 mg, 1.0% of the mean · house check · caution past 5%, outside past 10% · USP <905> is the compendial reference for between-unit uniformity (10 units; not claimable on 3)
✓Heavy metalsWithin limits
all non-detect · 2 units · dose-scaled limits derived from USP <232> (limits chapter)
✓Residual solventsWithin limits
all non-detect · 1 unit · USP <467> (procedural chapter)
✓Trifluoroacetic acidWithin limits
all non-detect · 1 unit · house limit · ion chromatography, the lab's method; no compendial chapter for the method run · limit <0.10% (the lab's)
✓EndotoxinsPass
3 of 3 pass · 3 units · USP <85> (procedural chapter)
✓Container closurePass
3 of 3 pass · 3 units · USP <1207> (informational chapter (1000-series))
✓SolubilityPass
3 of 3 pass · 3 units · house check · no compendial chapter
✓SterilityPass
1 of 1 pass · 1 unit · USP <71> (reference) · a rapid viability test used as an alternative to the USP <71> growth test; USP <1223> is the validation framework (informational chapter) · at Eagle Analytical
✓ConformityUnits agree
every reported unit passed on all 9 test rows · purity spread at most 0.20 pt within the house limit · content spread 1.0% within the house limit · QA approval corroborates: Vanguard Laboratory, Tori Johnson, Operations Manager, 2026-05-22 · 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.
