Peptide Crafters uses MZ Biolabs (2102 N Country Club Rd, Suite C, Tucson AZ 85716) as its testing lab, publishing the DEA Schedule III registration number RP0584676 and the named analyst Ken Pendarvis on its COAs - credentials that can be independently confirmed through the DEA's public diversion database. A lot-searchable verification portal at peptidecrafters.com/coa-verification/ allows researchers to enter a vial's lot number and retrieve the batch-specific test report. The 60-day refund window exceeds the 30-day industry standard. The primary transparency gaps are anonymous ownership - no founders, team, or operating entity are publicly named - and a testing scope that does not include sterility or endotoxin panels, which MZ Biolabs' standard service explicitly excludes.
| Dimension | Max | Notes | Score |
|---|---|---|---|
| Third-Party Testing Practice | 30 | MZ Biolabs named as testing lab (2102 N Country Club Rd, Suite C, Tucson AZ 85716). DEA Schedule III registration number RP0584676 - independently verifiable through the DEA's public diversion database. Named analyst: Ken Pendarvis. Testing equipment: Bruker Compact QTOF mass spectrometer and Waters Acquity UPLC under GLP conditions. Confirmed COA purity of 99.5%-99.88% on reviewed lots. MZ Biolabs' standard analytical service does not include sterility, endotoxin (USP 85), or heavy metals - this scope gap is explicitly documented on MZ Biolabs' own public site and limits this dimension score. | 24/30 |
| Batch Traceability & Verification | 20 | Public lot-searchable COA verification portal at peptidecrafters.com/coa-verification/. Researchers enter a LOT number from their vial label to retrieve the batch-specific MZ Biolabs report. Direct lot-to-documentation link accessible without purchase or account creation. One of the cleaner traceability implementations in the VTS catalog. Minor deduction as the portal is lot-number-dependent rather than browseable by product. | 18/20 |
| COA Accessibility | 15 | COA verification portal publicly accessible without login. Lot-number lookup returns the batch-specific MZ Biolabs report. Structural deduction for the portal being lot-number-dependent - a researcher without a vial in hand cannot browse the full COA archive or review prior batches by product. | 13/15 |
| COA Completeness | 15 | HPLC-UV purity and mass spectrometry identity (Bruker QTOF) confirmed per MZ Biolabs methodology. Full chromatogram data included. No sterility, endotoxin, or heavy metal testing in MZ Biolabs' standard service - explicitly stated on MZ Biolabs' public COA testing page. Vendors using labs that include broader contaminant screening score higher on this dimension. | 9/15 |
| Testing Recency | 10 | COAs from 2024 and 2025 production lots confirmed with specific lot numbers. Domain registered February 2024 so the catalog is approximately 18 months old. No evidence of recycled or placeholder COAs. Minor deduction as the review cadence for older SKUs is not publicly documented. | 7/10 |
| Policy Transparency | 5 | 60-day refund window confirmed - longer than the industry-standard 30 days. Free 2nd Day Air on orders over $250. However, both the refund policy and shipping terms are embedded within the Terms and Conditions page rather than at dedicated public URLs, adding friction to review. Texas governing law stated. No founder names, team page, or operating entity information published anywhere on the site. | 3/5 |
| Operational Track Record | 5 | Domain registered February 18, 2024 through Porkbun LLC, paid through 2029. Approximately 18 months in operation at time of scoring. Domain commitment through 2029 suggests longer-term intent. No operating entity, state registration, or ownership information publicly disclosed. Trustpilot reviews trend positive on documentation quality and transparency. | 2/5 |
| Total | 76/100 |