449 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 Tuesday night. For research use only. 99.58% median purity across 254 lots Defense, VA, Federal and Public safety: your VerifyPass code adds 5% on top of 3 for the price of 2 · get verified 242 / 242 lots pass sterility

‹ Certificates PGL-GI1 Lot 1357

Lab report (Certificate of Analysis, COA)

PGL-GI1 · 10 mg

Batch 1357 · tested September 11, 2025 (376 days ago) · released May 26, 2026

All tests passed

Batch
#1357 8 tests
Mass
10 mg
Purity
99.36%
Issuing lab accreditation
Vanguard · ISO 17025:2017 / A2LA #6377.01.01

1 unit tested for purity: 99.36% as printed

Conformity: Not assessable — every reported unit passed on all 5 test rows · QA approval corroborates: Vanguard Laboratory, Tori Johnson, 2025-09-11

Vanguard · issuing lab

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 V250825-17 001

Reports for this lot

  1. Vanguard Laboratory this report · tested September 11, 2025 · 5 results · QA approvalVanguard · issuing labAll tests passed
  2. Vanguard Laboratory second report · tested July 11, 2025 · 5 results · QA approvalVanguard · issuing labAll tests passed

Test by test

5 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

PurityWithin limits
99.36% · 1 unit · USP <621> (procedural chapter)
Purity consistency between unitsSingle measurement
1 unit measured (99.36%) · a between-unit spread needs two or more measured units
Net peptide content (assay)Within limits
11.83 mg · 1 unit · USP <621> (procedural chapter)
Content consistency between unitsSingle measurement
1 unit printed (11.83 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)

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
9.50 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)
ConformityNot assessable
every reported unit passed on all 5 test rows · QA approval corroborates: Vanguard Laboratory, Tori Johnson, 2025-09-11 · 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.

Tested by Vanguard Laboratory · Released May 26, 2026

Permanent URL: https://peptidology.co/coa/pgl-gi1-size-10mg-lot-1357/

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

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