GLP-3/Reta
C221H342N46O71
Precision-tested peptides for research
Research-Grade Peptides with Verified Purity & Full COA Transparency
Each peptide is independently analyzed using HPLC and mass spectrometry, with Certificates of Analysis available for full batch-level transparency.
USA Purity Certified
Browse Research Peptides
Our peptides are sourced through reliable manufacturing channels and verified using advanced analytical techniques such as HPLC and mass spectrometry. By making all test results publicly available, AscendBioLabs removes uncertainty and supports reproducible, data-driven research.
Benefits
What You Get
with AscendBioLabs
Research-grade Peptides with COA Access
Searchable product catalog with downloadable COAs and searchable lot IDs for fast verification and record-keeping.
Third-party Validated Purity & Identity
We publish independent HPLC and mass spectrometry data to support verified research quality.
Consistent, Documented Batches
Standard manufacturing and release criteria ensure predictable results across experiments and timepoints.
Compliance & Documentation-first
RUO labeling, SDS (safety data sheet) access, and usage guidelines help labs stay compliant and auditable.
Why Us
Why Researchers
Choose AscendBioLabs
Third-party testing
Every batch is analyzed by certified third-party laboratories using HPLC and mass spectrometry. That means an unbiased test report for every batch.
Strict purity standards
Released batches meet rigorous purity thresholds (most exceed 99.1%), reducing variability and supporting reproducible results.
Lab-ready documentation
Each product includes storage, handling, and basic protocol notes plus SDS access, practical documents your team can use immediately.
Test Results
Verified Purity & Identity:
Test Report Overview
Whether you're running small-scale experiments or long-term studies, AscendBioLabs provides consistently tested peptides with clear documentation and institutional ordering support.
View test results
Testimonials
Trusted by Researchers
of 1,000+ customers
5.0 / 5.0
Fast and Accurate
Fast shipping, clean packaging, and test results exactly as described.
Mohammed A.
5.0 / 5.0
Consistent Quality
Every batch has been consistent and easy to validate with the provided documentation.
Sarah T.
5.0 / 5.0
Great Support
Support was quick, clear, and helped us place institutional orders smoothly.
Daniel R.
5.0 / 5.0
Fast and Accurate
Fast shipping, clean packaging, and test results exactly as described.
Mohammed A.
5.0 / 5.0
Consistent Quality
Every batch has been consistent and easy to validate with the provided documentation.
Sarah T.
5.0 / 5.0
Great Support
Support was quick, clear, and helped us place institutional orders smoothly.
Daniel R.
Get Started
Support Your Research
with Documented Quality
Whether you're running small-scale experiments or long-term studies, AscendBioLabs provides consistently tested peptides with clear documentation and institutional ordering support.
FAQ
Frequently Asked Questions
01
Why aren’t there tests for different sizes?
For products that feature a range of sizes, only one test is shown because they come from the same batch. It is the same peptide across all sizes, so testing at different sizes is not needed.
02
What is ordering Backorder?
Ordering Backorder is basically like preordering. We are currently out of stock in the product but are resupplying so you will be the priority when new product comes. It may take several days to weeks to receive a tracking ID for your order which is why we offer backorder products at a 15% discount.
03
What does “research grade” mean?
Our peptides are manufactured for laboratory, scientific, and research use only. They are not intended for human consumption, medical use, or diagnostic applications. Research-grade classification means strict controls, documentation, and testing standards—without making therapeutic claims.
04
Are your peptides third-party tested?
Yes. Every batch is independently analyzed by Janosik and Freedom Diagnostics, a highly reputable European and American analytical laboratory. They verify identity, purity (≥99.1% on all products but one), and consistency using HPLC and mass spectrometry.
05
How should I store peptides after reconstitution?
After reconstitution, peptides should be kept refrigerated at ~4°C to preserve stability. Lyophilized (dry) peptides should be kept in a cool, dry, dark environment.
06
Are your products for human use?
No. All products are intended strictly for laboratory and research purposes. They are not for human consumption, medical use, therapeutic use, or diagnostic purposes.