Guessing Ends Here.
Verified Purity.
Every batch is tested by Amino Metrics, a U.S. lab operating under ISO/IEC 17025-aligned quality systems, and verified to ≥99% purity. The full COA is published on every product page before you order. For research use only.
- Batch number on every vial
- HPLC purity on every COA
- Ships from the United States
Four steps. Every batch. No exceptions.
The documented sequence a batch goes through before it leaves our Buffalo, NY facility.
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1
Source
We work with vetted manufacturers who meet our purity and handling requirements before any compound enters inventory.
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2
Test
Each batch goes to Amino Metrics for HPLC purity analysis, net content quantification and appearance assessment.
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3
Document
The results are compiled into a Certificate of Analysis with a verification code and published on the product page.
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4
Ship
Orders placed before 3 PM ET go out the same business day in plain packaging, with tracking sent by email.
Organized by type
Sizes, pricing, batch numbers and the COA for every product are on pexolabs.com.
Single peptides
Individually documented research peptides, each with a batch number and its own Certificate of Analysis.
View in catalogPeptide blends
Multi-component research formulations with every component and its amount listed on the label and COA.
View in catalogPexo H2O
Laboratory reagent supplied in 10 mL and 30 mL sizes for in vitro reconstitution work.
View in catalogBundle & save
Quantity pricing on every product. Pick 2, 3 or 5 vials and the discount applies automatically at checkout.
View in catalogAll listed materials are sold for laboratory research only. They are not drugs, dietary supplements, foods or cosmetics.
See the COA before you buy.
Every product has a batch-specific Certificate of Analysis. Amino Metrics performs the testing; Pexo Labs publishes what they find. No request, no waiting.
- Independent third-party HPLC testing
- Verification code you can check at Amino Metrics
- Published on the product page and in the COA library
- PurityHPLCReported
- Net contentQuantified per vialReported
- AppearanceVisual assessmentReported
- Batch numberMatches the vial labelReported
- Verification codeChecked at aminometrics.comReported
Quality you can verify, not just trust
Every batch is independently analysed by Amino Metrics. We give you the proof.
Verified potency
Each compound is quantified against its label claim to confirm the stated content is accurate. What the vial says is what you get.
99%+ purity
Amino Metrics analyses every batch by HPLC to confirm purity meets our 99%+ standard before it is released for sale.
Stability tested
We formulate and test each compound to remain stable throughout its stated shelf life when stored under recommended conditions.
Contaminant screening
HPLC analysis detects impurities and synthesis by-products, while net content and appearance checks flag underfilled, degraded or mislabeled material before release.
Batch-to-batch consistency
Strict weighing, handling and packaging protocols mean the product you order today performs identically to the next batch.
Research use only
All products sold by Pexo Labs are strictly for in vitro laboratory and developmental research purposes. They are not drugs, dietary supplements, foods, cosmetics or medical devices, and they have not been evaluated by the U.S. Food and Drug Administration. They are not for human or animal consumption, administration or application of any kind, and nothing on this page is intended to diagnose, treat, cure or prevent any disease.
Pexo Labs operates as a research chemical supplier. It is not a compounding pharmacy or compounding facility as outlined in Section 503A of the Federal Food, Drug, and Cosmetic Act, nor an outsourcing facility as described under Section 503B of the same Act. Buyers are responsible for compliance with all laws that apply in their jurisdiction.
Read the full Terms of ServiceBefore you order
Everything you need to know.
No. All Pexo Labs products are sold strictly for in vitro laboratory research and are not for human or animal consumption.
A lab report for a specific production batch. An independent laboratory tests a sample from that batch and records the measured purity (by HPLC), the net content in the vial and the appearance of the material. Every Pexo Labs batch is tested by Amino Metrics, and each COA carries a verification code you can check on their site.
Yes. Every product has its COA on the product page under the COA tab, and all COAs are collected in the COA library.
The identifier printed on each vial. It ties the material you receive back to the exact COA for that batch, and it is recorded on your order so you can match them later.
Orders placed before 3 PM ET are dispatched the same business day from Buffalo, New York. Tracking is emailed as soon as the parcel leaves. We ship within the United States only.
Major credit cards, Zelle, cryptocurrency and more. All transactions are processed through the secure checkout on pexolabs.com.
Yes. Email support@pexolabs.com with the name of the compound and we'll look into adding it to the catalog.
Continue to the full catalog
Current stock, sizes, pricing and every Certificate of Analysis are on pexolabs.com.