What is the purity of your peptides?

Our research peptides are third-party tested by HPLC, and most certificates record 99%+ purity. The exact figure for each compound is listed on its product page. Diluents such as bacteriostatic water are USP grade rather than a purity percentage.

How fast do orders ship?

Most US orders ship within 1 to 3 business days from our domestic facility, in plain, unmarked packaging.

Are these products for human use?

No. All compounds are sold strictly for in-vitro research and educational purposes. They are not intended for human or veterinary use.

Can I see the Certificate of Analysis (COA)?

Yes. Our third-party tested COAs are published publicly. No request or account required. Browse the archive at /coa or use the COA link on the product page. If a COA is not yet posted for a SKU, email support@optimized-aminos.com and we will send it.

What payment methods do you accept?

We accept major credit cards and select alternative payment methods at checkout. All transactions are encrypted and processed securely.

Do you ship internationally?

We currently ship within the United States. International availability varies by jurisdiction, so reach out if you have questions.

US-sourced peptides. Tested to the optimized standard.

We ship research peptides from Arizona. Our COAs are posted publicly, so you can check the lab results before you order.

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Why Optimized Aminos?

Five different Optimized Aminos research peptide vials — labels legible — on the production line

Every vial ships with a public, third-party tested Certificate of Analysis.

✓US-Sourced
✓HPLC-verified purity
✓Third-party tested

See our process

The Optimized Standard

The bar we hold ourselves to.

We didn't set out to be the cheapest listing. We set out to be the one you don't have to double-check — a fixed checklist we publish and hold ourselves to, so you can verify it yourself.

See a real COA Testing standards

HPLC

Independent verification

Third-party tested by Janoshik Analytical, an independent lab in Prague — HPLC purity and measured amount, not an in-house claim.

PUBLIC

Certificate of Analysis

Published in the open COA library and linked from the product page — no email, no login.

DISCREET

Unmarked packaging

Every order ships in plain, unmarked packaging. Nothing on the box identifies the contents.

US-SHIPPED

US-based dispatch

Domestic facility. Orders leave the building in 1–3 business days.

30-DAY

Backed by replacement

Any product that doesn't meet the standard gets replaced — within 30 days of delivery, no argument.

FREE

Shipment protection

Lost or damaged in transit, we ship a free replacement on unopened vials within 30 days. No return needed.

What is the purity of your peptides?: Our research peptides are third-party tested by HPLC, and most certificates record 99%+ purity. The exact figure for each compound is listed on its product page. Diluents such as bacteriostatic water are USP grade rather than a purity percentage.
How fast do orders ship?: Most US orders ship within 1 to 3 business days from our domestic facility, in plain, unmarked packaging.
Are these products for human use?: No. All compounds are sold strictly for in-vitro research and educational purposes. They are not intended for human or veterinary use.
Can I see the Certificate of Analysis (COA)?: Yes. Our third-party tested COAs are published publicly. No request or account required. Browse the archive at /coa or use the COA link on the product page. If a COA is not yet posted for a SKU, email support@optimized-aminos.com and we will send it.
What payment methods do you accept?: We accept major credit cards and select alternative payment methods at checkout. All transactions are encrypted and processed securely.
Do you ship internationally?: We currently ship within the United States. International availability varies by jurisdiction, so reach out if you have questions.