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99% Purity

99% Purity. Every Batch Tested.
Ships Same Day.

      FREEDOM DIAGNOSTICS Verified   • Midwest-Based •       Trusted by Researchers Nationwide  

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20+ Compounds —

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WHAT RESEARCHERS ARE SAYING

DISCLAIMER

The statements made within this website have not been evaluated by the US Food and Drug Administration. The statements and products of this company are not intended to diagnose, treat, cure, or prevent any disease. LOZ-Peptides is a chemical supplier.  LOZ-Peptides is not a compounding pharmacy or chemical compounding facility as defined under 503A of the Federal Food, Drug, and Cosmetic Act.

LOZ-Peptides is not an outsourcing facility as defined under 503B  of the Federal Food, Drug, and Cosmetic Act. We are dedicated to being a trusted chemical supplier and do not operate as a compounding pharmacy or outsourcing facility.

CONTACT US

Should you have any questions regarding LOZ-Peptides, or our product line, please fill out and submit our contact form, and a representative will contact you soon.

Frequently Asked Questions

What purity level are your peptides and how is it verified?▼

Every batch is independently tested by Freedom Diagnostics, a US-based laboratory, using HPLC and Mass Spectrometry analysis. We guarantee 99%+ purity on all peptides and include a full Certificate of Analysis with every order so you can verify results yourself.

How fast do you ship and is tracking included?▼

Orders placed before 2PM CT ship same day. Every order ships with full tracking via USPS and includes free shipment protection. You will receive a tracking email as soon as your label is created. Most domestic orders arrive within 2-4 business days.

What is bacteriostatic water and do I need it?▼

Bacteriostatic water (BAC water) is sterile water containing 0.9% benzyl alcohol, used to reconstitute lyophilized (freeze-dried) peptides for research. If you are working with powdered peptides, you will need BAC water to prepare them for use. We carry 10ML vials ready to ship.

How should I store my peptides?▼

Unreconstituted peptides should be stored in a cool, dry place away from direct sunlight. For long-term storage, refrigeration (2-8°C) is recommended. Once reconstituted with bacteriostatic water, peptides should be refrigerated and typically remain stable for 4-6 weeks.

What is a Certificate of Analysis (CoA)?▼

A Certificate of Analysis is an official document from a third-party laboratory confirming the identity, purity, and potency of a peptide batch. Our CoAs are generated by Freedom Diagnostics and are available for every product on our Certificates of Analysis page.

What happens if my package is lost or damaged?▼

Every order includes free shipment protection at no extra cost. If your package is lost, damaged, or stolen during transit, we will reship your order at no charge. Just contact us and we will take care of it.

Are these peptides for human use?▼

No. All products sold by LOZ Peptides are strictly for laboratory and research purposes only. They are not intended for human consumption, veterinary use, or any therapeutic application. By purchasing, you agree to use products solely for legitimate research.

Do you offer volume discounts for bulk orders?▼

Yes. Most of our peptides have tiered pricing built in. Select a higher quantity on any product page to see discounted pricing. For large or custom bulk orders, contact us directly at (888)-611-4335 and we will work with you on pricing.