Third-Party Tested

Independent third-party analysis confirms identity and purity on every lot.

≥99% Purity

Measured, documented, and published — not claimed.

Lot Traceable

The COA number matches the vial in your hands.

Same-Day Shipping

Order by 2 PM CT and it ships the same business day via UPS.

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    What Our Customers Say

    • Exceptional quality, exactly as described

      I've been ordering from Stratford Peptides for over a year. Every vial comes with a COA that matches exactly what they advertise. Purity is consistently above 99%. The packaging is excellent too.

      James T. — Verified Customer

    • Shipping speed is unmatched

      Placed my order before noon and had a tracking number within hours. Arrived the next business day in perfect condition. The lab results are always right there on the site. Super transparent operation.

      Rachel M. — Verified Customer

    • Best peptide supplier I've found

      The third-party testing sets them apart from every other company I've tried. You can actually look up the COA for your specific batch. That level of accountability is rare and worth every penny.

      Dr. Kevin B. — Verified Customer

      • SECURE MANUFACTURING

        Scientifically developed in certified cGMP facilities.

      • WIDESPREAD DELIVERY

        Reliable 3-5 business day nationwide shipping.

      • BRIDGING KNOWLEDGE GAPS

        Our team provides expert support continuously.

        PEPTIDE CALCULATOR

        What is the total volume of your syringe?

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        Peptide vial

        Select Peptide Vial Quantity

        Bacteriostatic water

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        How much of the Peptide do you want in each dose?

        Your Dosage Results

        Dose Volume

        0.01

        ml

        Units on Syringe

        10

        units

        Frequently Asked Questions

        Everything you need to know about our peptides — quality, purity, and delivery.

        Every vial we sell comes from a lab that follows current Good Manufacturing Practices (cGMP). That means each step of production is documented and controlled. Before a batch is released, it's tested by independent third-party labs for purity, identity, and sterility. Certificates of analysis are available so you can see the exact test results.

        Yes. The labs we work with use ISO-certified clean rooms where air quality, equipment, and handling procedures are tightly regulated. Staff are trained to pharmaceutical-grade standards. This ensures the peptides are produced in an environment that minimizes contamination risks.

        Peptides in lyophilized (freeze-dried) form are stable at room temperature for transport. Once you receive them, refrigeration is recommended to maintain long-term integrity. We package every order securely to prevent damage and ship promptly, so your vials arrive in optimal condition.

        We operate under strict in-house protocols that follow current Good Manufacturing Practices (cGMP). That means our team oversees the entire process from sourcing raw amino acids to the final lyophilized vial. Nothing is outsourced or repackaged. This gives us full control over purity, consistency, and sterility, and it's why we can stand behind every single vial we ship.

        Store them in the refrigerator, away from direct light and heat. If you need to keep them longer, some peptides can be stored frozen. Each vial comes with clear handling instructions so you know the proper conditions for stability.

        The strongest proof is transparency. For every peptide, we can provide certificates of analysis, manufacturing documentation, and references to the published scientific research behind it. If you ever have questions, we'll show you the data rather than ask you to take our word for it.

        The difference is transparency. Most sites give you a product name and a price. We provide full batch testing, lab documentation, and direct access to certificates of analysis so you don't have to guess what you're getting. When you order from us, you know exactly what's in the vial, where it was made, and how it was verified.