Every Spirit Peptides lot is supported by batch-specific testing documentation from an independent laboratory.
A Certificate of Analysis (COA) provides analytical information to help researchers assess the quality and identity of a specific lot, including:
Identity — Mass spectrometry can help verify that the analyzed material corresponds to the labeled peptide.
Purity — HPLC analysis can help determine the proportion of the target compound in the tested sample.
Content — Analytical results may provide information about the amount of peptide present in the tested material.
Find the corresponding lot below or scan the QR code on your vial to access its batch-specific documentation.
Review the data. Verify the lot. Research with confidence.
Lots published
Avg purity
ID confirmed
Scan your vial. Every label’s QR code opens that lot’s certificate on this site.
A Certificate of Analysis (COA) contains key analytical information that can help researchers evaluate whether a specific lot matches its labeled identity and stated quality specifications.
Mass spectrometry helps determine the molecular mass of an analyzed sample and compare it with the expected mass of the labeled peptide. When the measured mass aligns with the expected value, it supports the identification of the material as the labeled peptide. Identity testing is an important part of analytical evaluation because purity results alone cannot confirm that the sample contains the intended compound.
HPLC (High-Performance Liquid Chromatography) separates the components of a sample and helps estimate the proportion attributed to the target peptide. For example, a reported purity of 99.5% indicates that approximately 99.5% of the detected signal was attributed to the target compound under the specified analytical conditions. The accompanying chromatogram and analytical report provide additional information to help researchers interpret the results.
Lyophilized peptide materials may contain residual moisture, counter-ions, salts, or other components depending on the material and its manufacturing process. For this reason, the stated quantity of a vial should be evaluated in accordance with the applicable product specifications and analytical documentation, rather than relying solely on the vial's gross weight. Where available, the COA's content analysis or net-peptide measurement provides additional information about the amount of target peptide associated with the tested batch.
The term “third-party tested” should be transparent, meaningful, and verifiable.
At Spirit Peptides, third-party testing refers to analytical testing conducted by an independent laboratory rather than relying solely on internal quality claims. Testing documentation is made available for review, allowing researchers to independently evaluate the reported findings.
Our quality documentation may include both HPLC purity analysis and mass spectrometry identity testing. These methods assess different characteristics: purity analysis helps evaluate the composition of a sample, while mass spectrometry helps assess its molecular identity.
Where batch-specific testing documentation is available, the results relate to the identified lot rather than serving as a general claim for an entire product line.
Transparency should be supported by verifiable documentation. The lot code on your vial should correspond to the relevant published certificate, where available, and the QR code on the label can provide direct access to the associated documentation. This approach helps researchers review the available evidence and distinguish documented testing from unsupported quality claims.
How the testing program works—and what the documentation means for the vial in your hand.
Each Spirit Peptides lot is supported by independent analytical testing documentation, which may include methods such as HPLC and mass spectrometry to evaluate purity and help verify molecular identity.
A batch-specific Certificate of Analysis (COA) documents the relevant analytical results and is made available for review where applicable. The QR code on each vial provides convenient access to the corresponding lot documentation, helping researchers verify the information associated with the material they receive.
Review the lot. Check the data. Verify the documentation.
For research use only. Not for human or animal consumption.
No. Spirit Peptides products are intended strictly for research use only and are not intended for human or animal consumption, diagnosis, treatment, prevention, or therapeutic use.
Our products are supplied exclusively for qualified laboratory, in-vitro, and analytical research applications.
Each Spirit Peptides batch is supported by independent analytical testing documentation, which may include methods such as HPLC to evaluate purity and mass spectrometry to help verify molecular identity.
Batch-specific Certificates of Analysis (COAs) are made available for review where applicable, providing documented analytical findings for the relevant lot. The QR code on each vial offers convenient access to the corresponding batch documentation, helping researchers review and verify lot-specific information.
For research use only. Not for human or animal consumption.
No. Spirit Peptides products are intended strictly for research use only and are not intended for human or animal consumption, diagnosis, treatment, prevention, or therapeutic applications.
All products are supplied exclusively for qualified laboratory, in-vitro, and analytical research purposes.
Every Spirit Peptides product is linked to its corresponding lot documentation, where available, with independent laboratory testing, reported analytical results, and QR-coded vial labels to support traceability.
Make informed decisions based on documented results, not just claims.
