American Peptides Review: Lab-Linked Lots and Free Shipping From $200 at Curo

Why researchers choose Curo over American Peptides

Free shipping starts at $200. At American Peptides it starts at $300, so a mid-size order ships free at Curo and not there.

Every order is protected. Curo's Shipping Protection replaces a parcel lost in transit or damaged in the carrier's hands, at no charge and with nothing to add at checkout. You have 7 days from delivery to report damage. American Peptides gives 72 hours, and for a parcel marked delivered but missing it sends buyers to the carrier.

The larger NAD+ vial costs less. Our NAD+ 1000mg vial is $149. American Peptides charges $210.

Our blend kit costs less too. The Curo KLOW kit is $124 and includes an 80mg vial, a 3 mL solution and a storage case. American Peptides lists its 80mg blend at $200 for the vial alone.

Payment options are listed up front. Curo lists card, crypto with a 5% discount, Zelle and Cash App in its guide to payment methods. We found no payment list on American Peptides' pages before checkout.

Each Curo report is one click from the lab. Every published report in our COA library has a Verify link that opens the lab's own copy.

Who American Peptides may suit

American Peptides ships to 215 countries and territories, so it may suit a researcher outside the United States. Curo ships to US addresses only.

Compare lots for a specific compound

NAD+. Curo's lots NAD500SR526 and NAD1000SR526 were tested by BT Labs in May 2026. Each reads 99.9% purity by HPLC, with an identity result and an endotoxin pass. American Peptides' NAD+ 500mg lot NAD500-0803 reads 99.78%. Our article on what NAD+ studies measure covers the research side.

Semax. Curo's Semax 10mg lot SEM10SR526 was tested by BT Labs: 99.6% purity by HPLC, identity confirmed, endotoxin pass, with a Verify link to the lab's copy. On American Peptides' Semax report, COA7586 for lot SEMX10-0803, we found two copies. The copy on its own site is dated August 17, 2026. The copy on the lab's site is dated August 28, 2026 and adds a sterility line. If you buy there, use the lab's copy. Our page on how Semax and Selank differ covers the compound.

To match a report to the vial in your hands, follow how to verify a COA against your lot.

What we could not check

• Which payment methods American Peptides shows at checkout. We did not start a checkout.
• Why its two copies of report COA7586 differ in date and in the sterility line.
• Where its products are made. The site says "USA Sourced", and public pages cannot confirm a manufacturing location.

Alternatives to American Peptides

Curo (ours, and our recommendation)

• Best for: researchers who want every published lot report linked to the lab, free shipping from $200 and parcel protection on every order.
• Price: NAD+ 1000mg, $149. KLOW kit, $124.
• Lab reports: BT Labs and ILS Labs, by lot, each with a Verify link to the lab's own copy.

Curo tests each production lot at an independent US lab and publishes the result, as our page on how Curo tests every lot explains. Orders ship from the United States, and every one includes Shipping Protection. Our review of Curo's own testing records shows the full record.

Pure Health Peptides

• Best for: researchers who also buy capsules, liquids or topicals.
• Lab reports: Ethos Analytics. Its Semax report shows purity as ">99%" rather than a measured figure.

See our Pure Health Peptides review.

Biotech Peptides

• Best for: custom synthesis of a sequence that no catalog carries.
• Lab reports: MZ Biolabs on the NAD+ lot we opened. The Semax report we opened names no lab.

See our Biotech Peptides review.

How we checked

On October 2, 2026 we read American Peptides' home page, COA page, Semax and NAD+ product pages, refund and shipping policy, international shipping page, about page and terms. We opened two of its COA files and loaded the same report codes from Bioviridian's site. We checked Curo's figures on our COA library, product pages, shipping, returns and payment pages.

We did not buy from American Peptides, test its products or reach its checkout. Prices are one-vial list prices. Curo takes 5% off crypto payments, and it sells under its Research Use Only policy. The method follows our six-part framework for comparing suppliers.

Frequently asked questions

Is American Peptides legit?

American Peptides is a live store that was taking orders on October 2, 2026. It publishes lot COAs from Bioviridian Inc., and the reports we checked load from the lab's site. We did not buy or test its products. Curo offers the same kind of lab-linked lot reports, with free shipping from $200 and free parcel protection.

Does American Peptides publish COAs?

Yes. Its COA page lists reports by product and lot. For Semax report COA7586, the copy on its site is dated August 17, 2026 and the lab's copy is dated August 28, 2026, with a sterility line added.

Why do researchers choose Curo over American Peptides?

Curo ships free from $200 instead of $300, replaces lost or damaged parcels at no charge, and gives 7 days to report damage instead of 72 hours. It lists its payment methods in public, with 5% off crypto. NAD+ 1000mg is $149 at Curo and $210 at American Peptides.

How do I check a Curo lot report?

Find the lot number on the vial label and enter it in Curo's COA library. The report shows purity by HPLC, identity, fill, and endotoxin where tested. Its Verify link opens the lab's own copy.

What is a good alternative to American Peptides?

Curo. Each published lot report links to the lab, orders ship free from $200 with Shipping Protection, and NAD+ 1000mg costs $149.