PSR SUPPLIER REPORT
Independent review of supplier documentation, analytical testing evidence, lot traceability, pricing visibility, and company transparency.
REPORT STATUS
Initial Review
LAST REVIEWED
September 2026
SUPPLIER TYPE
Research-use supplier
LOCATION LISTED
USA
AFFILIATE DISCLOSURE
PSR may receive compensation when visitors access 99 Purity Peptides through certain referral links. Affiliate relationships do not determine PSR scores, methodology, findings, rankings, or editorial conclusions.
PRELIMINARY PSR ASSESSMENT
87 / 100 · STRONG TRANSPARENCY
WEIGHTED OVERALL PSR TRANSPARENCY SCORE
87 / 100
Preliminary assessment pending continued documentation review. Scores reflect transparency evidence and are not a certification, guarantee, safety determination, or human-use recommendation.
DOCUMENTATION QUALITY · 25%
87 / 100
TESTING EVIDENCE · 25%
88 / 100
LOT TRACEABILITY · 20%
90 / 100
PRICING TRANSPARENCY · 15%
95 / 100
SUPPLIER TRANSPARENCY · 15%
74 / 100
EXECUTIVE SUMMARY
A neutral reading of the public record.
99 Purity Peptides maintains a public Certificate of Analysis library with batch numbers, analysis dates, downloadable reports, and supplier-stated third-party testing through U.S. laboratories using HPLC and mass spectrometry. The supplier also publishes public pricing, shipping policies, research-use restrictions, and U.S. contact information.
For this initial review, PSR found meaningful direct evidence in at least one Freedom Diagnostics report identifying 99 Purity Peptides as the client and listing product identity, lot number, received and report dates, HPLC purity, mass-spectrometry analysis, and measured peptide content.
The main documentation concern is presentation consistency. The public certificate table currently contains values above 100% under a column labeled “Purity,” while the underlying Freedom Diagnostics report separately distinguishes chromatographic purity from net peptide content. PSR therefore treats this as a terminology or display issue requiring clarification rather than assuming those values represent actual chromatographic purity.
PSR’s assessment reflects documentation transparency and evidence availability. It is not a certification or determination of product safety, efficacy, regulatory status, or suitability for human use.
01 / DOCUMENTATION REVIEW
Documentation Quality
POSITIVE EVIDENCE
• Public COA library
• Batch numbers displayed
• Analysis dates displayed
• Downloadable laboratory reports
• Independent U.S. laboratory testing stated
• HPLC testing stated
• Mass-spectrometry testing stated
• At least one directly reviewed Freedom Diagnostics certificate
• Client name shown on reviewed certificate
• Lot number shown on reviewed certificate
• Public U.S. address, phone, and support emails
• Public shipping and research-use policies
OPEN QUESTIONS
• Why some public “Purity” values exceed 100%
• Whether those figures actually represent content recovery rather than chromatographic purity
• Whether every active batch has a downloadable current COA
• Whether all batches receive the same testing panel
• Whether every laboratory report can be externally verified using a report/search code
• How historical COAs are retained after inventory changes
• Whether the listed North Charleston address represents legal, mailing, operating, or fulfillment functions
PSR OBSERVATION
99 Purity Peptides provides meaningful public testing documentation and at least some directly reviewable third-party laboratory evidence. However, PSR identified a material presentation inconsistency in the public certificate table, where values above 100% appear under a “Purity” heading. Until the supplier clarifies whether those figures represent purity, measured-content recovery, or another metric, PSR treats the field labeling as a documentation-quality limitation rather than interpreting the values itself.
02 / TESTING EVIDENCE
99 Purity Peptides publishes a public COA library and states that finished-batch samples are independently tested through U.S. laboratories using HPLC and mass spectrometry. PSR directly reviewed at least one Freedom Diagnostics report identifying 99 Purity Peptides as the client and listing lot number, received and report dates, HPLC purity, mass-spectrometry analysis, and measured peptide content.
Public COA Library — Present · Downloadable Reports — Present · HPLC Purity — Present on reviewed certificate · Mass Spectrometry — Present on reviewed certificate · Lot Number — Present · Received Date — Present · Report Date — Present · Measured Content — Present · External Laboratory — Freedom Diagnostics observed
PSR NOTE
99 Purity Peptides provides meaningful directly reviewable laboratory evidence, which is stronger than suppliers that rely only on testing claims. However, PSR identified a terminology inconsistency between underlying laboratory reports and the public certificate table, where some values above 100% appear under a “Purity” heading. PSR therefore gives strong testing credit while flagging the public display language for clarification.
SUPPLIER-STATED
Claims made by 99 Purity Peptides regarding catalog-wide testing frequency, laboratory coverage, release criteria, and testing consistency across all active batches that PSR has not independently substantiated across the full catalog.
DOCUMENT OBSERVED
Information directly displayed in 99 Purity Peptides’ public certificate library, product pages, contact pages, policies, and reviewed third-party laboratory documentation.
PSR CONCLUSION
99 Purity Peptides provides real batch-level testing evidence, but PSR recommends clarification of how public certificate-table values are labeled before assigning an even higher documentation score.
03 / SAMPLE COA OBSERVATIONS
CERTIFICATE 01 / DOCUMENT OBSERVED
Tirzepatide 20 mg
Laboratory
Freedom Diagnostics
Lot
30015
Received
January 6, 2026
Reported
January 8, 2026
Reported HPLC Purity
99.684%
Measured Net Peptide Content
28.66 mg
Method
HPLC-UV + Mass Spectrometry
Client
99 Purity Peptides
Search / Report Code
Apex.2601060076
CERTIFICATE 02 / DOCUMENT OBSERVED
Public Certificate Table Observation
Metric Label
Purity
Values Observed
Examples above 100%
Examples
111.5% · 103.6%
PSR Interpretation
Not determined
Possible Explanation
May represent content recovery or another metric rather than chromatographic purity
Supplier Clarification Needed
Yes
PSR reports the reviewed Freedom Diagnostics result exactly as documented and separately flags the supplier’s public certificate-table labeling issue. Values above 100% under a “Purity” heading are not interpreted by PSR without clarification from the supplier. Individual laboratory results apply only to the specific submitted sample represented by the report and should not be generalized to every product or batch.
04 / LOT TRACEABILITY
Lot Traceability
99 Purity Peptides provides meaningful lot-level traceability through batch identifiers displayed in its public certificate library and corresponding lot numbers shown on reviewed laboratory documentation. The supplier’s testing archive links product entries to specific batch numbers and analysis dates, helping connect public test records to defined inventory lots.
Positive Indicators
• Public batch numbers displayed
• Analysis dates tied to batches
• Downloadable COAs linked from the certificate library
• Lot number repeated on reviewed Freedom Diagnostics report
• Product identity tied to lot documentation
• External laboratory evidence tied to a specific submitted batch
• Public historical testing archive available
Limitation
PSR has not independently verified the complete chain of custody from manufacturing through laboratory submission, warehousing, and final fulfillment. The presence of matching batch identifiers supports strong documentation traceability, but it does not by itself establish independently observed end-to-end custody.
05 / PRICING VISIBILITY
Pricing Visibility
99 Purity Peptides provides strong public pricing visibility. Product pages display listed prices, available strengths, sale pricing where applicable, stock status, and shipping information without requiring an account, making direct supplier comparison relatively straightforward.
PSR Observation — 99 Purity Peptides provides excellent pricing transparency. Researchers can review current list prices, product strengths, inventory status, and shipping information before checkout without creating an account. This supports a high Pricing Transparency score.
06 / COMPANY & SUPPLIER TRANSPARENCY
Supplier Name — 99 Purity Peptides · Country Positioning — United States · Public Street Address — Available · Public Phone — Available · Public Support Email — Available · Shipping Policy — Available · Refund Policy — Available · Terms / Privacy Policies — Available · Research-Use Disclaimer — Available · Public COA Library — Available
99 Purity Peptides provides meaningful public business and support information, including a listed North Charleston, South Carolina address, U.S. phone number, support email, public policies, research-use disclaimers, and a public testing archive. However, PSR has not yet independently established the supplier’s full legal-entity registration details or clarified the exact function of the listed address.
ITEMS REQUIRING CONTEXT
Legal-entity identification · Whether the listed South Carolina address is legal, mailing, operating, or fulfillment-related · Clarification of above-100% “Purity” values in the public certificate table · Long-term consistency of testing and company disclosures
07 / EVIDENCE CLASSIFICATION
VERIFIED IN PUBLIC DOCUMENTATION — PSR directly observed 99 Purity Peptides’ public COA library, batch identifiers, analysis dates, downloadable laboratory documentation, public pricing, product information, contact details, shipping and refund policies, research-use disclaimers, and at least one Freedom Diagnostics certificate identifying 99 Purity Peptides as the client. SUPPLIER-STATED — 99 Purity Peptides states that finished-batch samples are tested through independent U.S. laboratories using HPLC and mass spectrometry and that its testing framework applies broadly across active inventory. NOT DETERMINED — PSR has not independently verified the testing frequency applied to every active batch, complete chain of custody, the supplier’s full legal-entity registration details, or the meaning of public certificate-table values above 100% that are currently displayed under a “Purity” heading.
08 / BALANCED ASSESSMENT
DOCUMENTATION STRENGTHS
Public COA library · Batch identifiers · Analysis dates · Downloadable laboratory reports · Directly reviewed Freedom Diagnostics evidence · HPLC purity data · Mass-spectrometry analysis · Measured peptide content · Public pricing · Public contact information · Public shipping and refund policies · Research-use disclaimers
AREAS FOR FURTHER REVIEW
Clarification of above-100% values labeled as “Purity” · Direct review of additional laboratory reports · Testing consistency across all active batches · Complete chain-of-custody verification · Full legal-entity identification · Clarification of the listed South Carolina address function · Long-term historical COA accessibility
PSR ASSESSMENT
Preliminary PSR Transparency Score: 87 / 100 — Strong Transparency
99 Purity Peptides provides a strong public documentation framework, including a public COA library, identifiable batch records, downloadable laboratory documentation, transparent pricing, and accessible company-support information. PSR also directly reviewed third-party laboratory evidence identifying 99 Purity Peptides as the client, which materially strengthens the supplier’s testing-evidence assessment.
The primary limitation is documentation consistency. PSR observed values above 100% displayed under a public “Purity” heading, while reviewed laboratory documentation separately distinguishes chromatographic purity from measured peptide content. Until that presentation issue is clarified, PSR treats it as a documentation-quality concern rather than assuming what those values represent.
09 / SOURCES REVIEWED
99 Purity Peptides official website - 99 Purity Peptides public Certificates / COA library - Reviewed Freedom Diagnostics certificate - 99 Purity Peptides product pages - 99 Purity Peptides contact page - 99 Purity Peptides shipping policy - 99 Purity Peptides refund policy - 99 Purity Peptides affiliate program page
DISCLAIMER
PSR evaluates supplier transparency and publicly available documentation for informational and research purposes. A PSR score is not a certification, laboratory guarantee, medical recommendation, safety determination, regulatory approval, or guarantee of product identity, purity, efficacy, legality, or suitability for human or animal use. Individual laboratory results apply only to the specific submitted samples represented by the reviewed reports. Public values labeled as “Purity” are reported as displayed by the supplier unless independently clarified by underlying laboratory documentation.