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 1667 · tested December 1, 2025 (308 days ago) · released May 26, 2026
All tests passed
Batch
#1667 9 tests
Mass
50 mg
Purity
>99.80%
Issuing lab accreditation
Vanguard · ISO 17025:2017 / A2LA #6377.01.01
1 unit tested for purity: >99.80% as printed
Conformity: Not assessable — every reported unit passed on all 6 test rows · QA approval corroborates: Vanguard Laboratory, Tori Johnson, Operations Manager, 2025-12-01 · QA approval corroborates: Eagle Analytical Services Inc., Alison Eng, Quality Control Manager, 2025-11-24
6 results on the report · 3 rows computed from the per-unit values · 2 labs · 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
✓PurityWithin limits
>99.80 · 1 unit · USP <621> (procedural chapter)
–Purity consistency between unitsSingle measurement
1 unit printed (>99.80%) · a between-unit spread needs two or more measured units
✓Net peptide content (assay)Within limits
55.90 mg · 1 unit · USP <621> (procedural chapter)
–Content consistency between unitsSingle measurement
1 unit printed (55.90 mg) · a between-unit spread needs two or more measured units
✓Heavy metalsWithin limits
5 elements non-detect · 1 unit · dose-scaled limits derived from USP <232> (limits chapter)
Element
Measured
Limit
Verdict
Chromium (Cr)
ND (<0.05 ppm)
1,100,000 ppm
Not detected
Arsenic (As)
ND (<0.01 ppm)
15,000 ppm
Not detected
Cadmium (Cd)
ND (<0.01 ppm)
2,000 ppm
Not detected
Lead (Pb)
ND (<0.01 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
✓EndotoxinsWithin limits
1.29 EU/mg · 1 unit · USP <85> (procedural chapter)
–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
✓SterilityPass
1 of 1 pass · 1 unit · USP <71> (procedural 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
–ConformityNot assessable
every reported unit passed on all 6 test rows · QA approval corroborates: Vanguard Laboratory, Tori Johnson, Operations Manager, 2025-12-01 · QA approval corroborates: Eagle Analytical Services Inc., Alison Eng, Quality Control Manager, 2025-11-24 · 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.