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Frequently Asked Questions

Orders & Shipping

What forms of payment do you accept?

We make checkout easy. Pay with any major credit or debit card. (Please note: FSA/HSA cards aren’t accepted.)
Prefer other methods? We also accept Zelle and CashApp — you’ll see simple instructions during checkout.

Where do you ship?

Coastal Peptides ships within the United States. International shipping is not available at this time.

What shipping options do you offer?

We partner with reliable carriers to get your order to you as quickly as possible.

  • Standard Shipping – Estimated 3–7 business days

  • FedEx 2-Day Express – Typically arrives in 2 business days (Monday–Friday)

  • FedEx Overnight Express – Typically arrives the next business day (Monday–Friday)

Saturday delivery: Not included with standard FedEx 2-Day service. FedEx Overnight may reach some areas on Saturday but is not guaranteed.

Delivery times are estimates and can be affected by carrier delays, weather, or holidays.

I didn’t receive a tracking number. What should I do?

Once your order ships, we’ll email you a tracking number. If you don’t see it, please check your spam or junk folder. You can also track your shipment here or log into your account to view your order status.

Still can’t find it? Contact us and we’ll be happy to help.

My package is missing. What should I do?

Occasionally, carriers mark a package as “delivered” a little early. Most orders show up within 24–48 hours after the first scan.

If your package hasn’t arrived after two days:

  • Double-check the delivery address on your order.
  • Look around your property or check with neighbors.
  • Contact your local post office (or FedEx location if shipped FedEx) for more details.

Still can’t locate it? Reach out to us and we’ll help track it down.

About Our Peptides

What are research peptides?

Research peptides are laboratory compounds intended solely for scientific and research use. They are not approved for human or veterinary use, and Coastal Peptides sells them strictly for in-vitro research purposes only.

In what form and condition will I receive my peptides?

Our peptides are shipped as lyophilized (freeze‑dried) powders, which ensures maximum stability and potency during transit.

What is the purity of your peptides?

All peptides undergo third-party testing to confirm a purity level of ≥98%, ensuring high quality and consistency for research purposes.

Do you provide certificates of analysis or test results?

Yes. Certificates of Analysis (COAs) and test results are available on our website, matched by batch number for every product.

How should I store your peptides before reconstitution?
  • Refrigerated (2–8 °C): Peptides are stable for up to 12 months.
  • Frozen (–20 °C): Peptides can be stored long-term, often maintaining stability for 24–48 months.
How should I store peptides after reconstitution?

Once reconstituted with bacteriostatic water, peptides should be refrigerated (2–8 °C). Under these conditions, stability is typically maintained for 4–8 weeks.

Can I freeze peptides after reconstitution?

Freezing reconstituted peptides is not recommended, as ice crystal formation may damage peptide structure and compromise sterility.

How much reconstitution solution should I add?

Coastal Peptides cannot provide specific reconstitution or dosing instructions. For research purposes, we recommend using a tool like the Peptide Calculator. Be sure to set the calculator to the same unit listed on your vial label (e.g., mg).

How do I reconstitute peptides properly?
  1. Allow the vial and bacteriostatic water to reach room temperature before mixing.
  2. Clean the vial stopper with an alcohol swab.
  3. Draw up the desired amount of bacteriostatic water.
  4. Slowly inject the water down the inside wall of the vial.
  5. Gently swirl until dissolved—do not shake.
How will I know when to discard peptides?

Discard any reconstituted peptides stored longer than 8 weeks, or if the solution becomes discolored or cloudy.