444 third-party lab reports published 3 for the price of 2 on compound vials and capsules — put any 3 in your cart and the cheapest one is free, automatically. Solvents and lab supplies excluded. Ends Monday night. For research use only. 99.59% median purity across 251 lots Defense, VA, Federal and Public safety: your VerifyPass code adds 5% on top of 3 for the price of 2 · get verified 239 / 239 lots pass sterility

‹ Certificates PGL-G1 Lot 1770

Lab report (Certificate of Analysis, COA)

PGL-G1 · 34.22 mg

Batch 1770 · tested September 9, 2026 (11 days ago) · released September 11, 2026

All tests passed

Batch
#1770 14 of 15 tests
Mass
30 mg · tested 34.22 mg
Purity
99.55%
Issuing lab accreditation
Vanguard · ISO 17025:2017 / A2LA #6377.01.01

3 units tested for purity: 99.55 / 99.31 / 99.51% · spread 0.24 pt · net peptide content 34.22 / 34.26 / 34.19 mg

Conformity: Units agree — every reported unit passed on all 11 test rows · purity spread 0.24 pt within the house limit · content spread 0.2% within the house limit · QA approval corroborates: Vanguard Laboratory, Tori Johnson, Operations Manager, 2026-09-09

Vanguard · issuing labEagle Analytical · sterility

Verified by Vanguard Laboratory

This certificate is also hosted by Vanguard Laboratory — the issuing lab — on its own verification site.

View on VerifiedByVanguard.com
Laboratory ID V260828-46 003

Reports for this lot

  1. Vanguard Laboratory this report · tested September 9, 2026 · 11 results · QA approvalVanguard · issuing labEagle Analytical · sterilityAll tests passed

Test by test

11 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

IdentityPass
3 of 3 pass · 3 units · USP <621> (procedural chapter)
PurityWithin limits
avg 99.46% · 3 units · USP <621> (procedural chapter)
Purity consistency between unitsWithin house limit
3 units: 99.55 / 99.31 / 99.51% · spread 0.24 pt · house limit · caution past 0.50 pt, outside past 1.00 pt · per-unit USP <621> results
Net peptide content (assay)Within limits
avg 34.22 mg · 3 units · USP <621> (procedural chapter)
Content consistency between unitsWithin house limit
3 units: 34.22 / 34.26 / 34.19 mg · spread 0.07 mg, 0.2% 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
5 elements 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) · limit <5.00 EU/mg (the lab's)
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
Other · Adulterant screenWithin limits
all non-detect · 1 unit · no chapter named in the record; a screen
ConformityUnits agree
every reported unit passed on all 11 test rows · purity spread 0.24 pt within the house limit · content spread 0.2% within the house limit · QA approval corroborates: Vanguard Laboratory, Tori Johnson, Operations Manager, 2026-09-09 · 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.

Tested by Vanguard Laboratory · Eagle Analytical Services Inc. · Released September 11, 2026 · Verify: go.peptidology.co/zND0At

Permanent URL: https://peptidology.co/coa/pgl-g1-size-34-22mg-batch-1770-lot-1770/

For research use only. Not intended for diagnostic or therapeutic use.

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