INDEPENDENT. PRECISE. TRANSPARENT.
Purity Testing
You Can Trust.
Independent analytical testing for research peptides using validated laboratory methods and transparent reporting you can trust
SCIENCE-BACKED RESEARCH
HPLC + LC-MS TESTING
THIRD-PARTY INDEPENDENT
USA LABORATORY
TRANSPARENT REPORTING
ABOUT PEPTIDES TESTING LAB
Science Without Compromise.
We deliver accurate, unbiased purity and identity testing with industry-leading turnaround times and complete transparency. Our mission is to raise the standard for peptide quality through science, integrity and accountability.
HPLC PURITY
Quantitative analysis of peptide purity
LC-MS IDENTITY
Mass spectrometry for identity confirmation
BATCH VERIFICATION
Consistent, reliable batch-to-batch results
RESEARCH REPORTING
Clear, transparent reports you can rely on
How It Works
1
SUBMIT SAMPLE
Send your sample using our easy submission form
2
LAB ANALYSIS
We perform HPLC and LC-MS testing for purity and identity
3
ANALYTICAL REVIEW
Our team reviews and validates every result for accuracy
4
CERTIFICATE ISSUED
Receive your Certificate of Analysis via email and view it publicly
OUR SERVICES
PURITY TESTING
IPLC analysis for accurate purity quantification
IDENTITY TESTING
LC-MS confirmation of peptide identity
CUSTOM ANALYTICAL TESTING
Method development and specialized testing solutions
COA VERIFICATION
Verify Certificates of Analysis anytime publicly
What types of peptides can be tested?
Peptides Testing Lab provides independent laboratory testing for a broad range of research peptides, including single peptides, peptide blends, lyophilized powders, and custom formulations. Our laboratory analyzes samples for identity, purity, and concentration using validated analytical methods to help researchers, manufacturers, and distributors verify product quality.
If you’re unsure whether your peptide can be tested, contact our team before submitting your sample.
How long does peptide testing take?
Most peptide testing is completed within 5–10 business days after your sample is received by our laboratory. Turnaround time may vary depending on sample complexity, testing requirements, and laboratory volume. We prioritize fast, accurate reporting while maintaining the highest analytical standards, ensuring every Certificate of Analysis (COA) reflects reliable laboratory data.
How accurate is peptide purity testing?
Peptide purity testing is performed using validated laboratory methods designed to accurately identify peptide composition and measure sample purity and concentration. Our analytical process follows rigorous quality control procedures to provide reliable, reproducible results. Every sample is tested independently, helping researchers and customers make informed decisions based on objective laboratory data.
Are peptide COAs publicly available?
Yes. Transparency is one of the principles that sets Peptides Testing Lab apart. After testing is complete, Certificates of Analysis (COAs) are published in our searchable public database, allowing researchers, manufacturers, and customers to review batch-specific laboratory results. Customer-identifying information is never published—only the analytical data needed to verify testing outcomes. Our public COA database promotes greater accountability and confidence throughout the peptide industry.
How do I submit a peptide sample for laboratory testing?
Submitting a peptide sample is simple.
- Complete our online sample submission form.
- Securely package your peptide sample according to our shipping guidelines.
- Ship your sample to our laboratory.
- Our scientists perform independent testing and quality analysis.
- Once testing is complete, you’ll receive a detailed Certificate of Analysis (COA), and the results will be added to our public COA database.
If you have questions before sending your sample, our team is available to help ensure your submission is prepared correctly.
What is a Certificate of Analysis (COA) for peptides?
A Certificate of Analysis (COA) is a laboratory report that documents the analytical results of a tested peptide sample. A COA typically includes information such as peptide identity, purity, concentration, testing methodology, batch information, and the date of analysis. At Peptides Testing Lab, every COA is generated through independent laboratory testing and provides clear, transparent data that researchers and customers can use to evaluate the quality of a peptide sample. Our searchable public COA database makes it easy to verify results and compare batches over time.
Ready to Test Your Sample?
Experience independent analytical testing built on precision, transparency and scientific integrity.