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Laboratory Research Peptides

Every lot
independently
verified.

We evaluate every compound we carry. Every vial is QR-linked to its lot-specific Certificate of Analysis. No guesswork. The documentation speaks for itself.
View the Catalog
US Lab Verified
Independent third-party testing on every lot.
QR-Scannable COA
Scan directly from the vial to the lot-specific Certificate of Analysis.
5-Point Testing Panel
Identity, purity, potency, sterility, and endotoxin.
Our products

The Catalog

Curated compounds. Not everything. The right things, documented to a standard that holds up.

  • ARA-290

    10mg
    From $32.00
    Add to cart

  • GHK-Cu

    50mg | 100mg
    From $17.60
    Select options This product has multiple variants. The options may be chosen on the product page

  • KPV

    10mg | 30mg
    From $28.00
    Select options This product has multiple variants. The options may be chosen on the product page

  • Nexia-3R

    5mg | 10mg | 20mg | 30mg
    From $20.00
    Select options This product has multiple variants. The options may be chosen on the product page
View Everything
The Standard

What Qualifies a Lot

Every lot is tested independently before release. Results post to a lot-specific COA, so you see exactly what was checked and what came back.

Disclosure Standard

A lot ships only once identity is confirmed and results clear our research-grade thresholds. If a result falls outside the labeled spec, we disclose it. We don’t hide underfills or overfills.

The Testing Panel

IDENTITY
Compound Verification
PURITY
Target Compound Percentage
NET CONTENT
Measured Amount per Vial
ENDOTOXIN
Gram-Negative Bacterial Contamination
STERILITY
USP <71> 14-Day Screening
HEAVY METALS
Elemental Contaminant Screening
FENTANYL
Contamination Screening
CONFORMITY
Multi-Vial Consistency

Verified by VialTalk.
Backed by real reviews.

FROM SOURCE TO VIAL

Our Process

Every compound goes through the same process before it reaches you. No shortcuts, no exceptions. From intake and testing to fulfillment and final verification, each step is tied back to the lot.

Sourced

Procured from trusted, vetted suppliers.

1

Lot Assigned

Every batch receives a unique lot ID.

2

Tested

Sample vials are sent for independent U.S. testing.

3

Listed

COA linked. QR generated. Ready to list on the site.

4

Order

Ordering available through the website once the lot is live.

5

Fulfillment

Packed for UPS, USPS, or local delivery, with InsureShield® coverage when shipped.

6

Live Tracking

Track by email, SMS, or directly on the site.

7

Delivered

Delivered to your door or locally fulfilled.

8

Scan QR

Review the COA and begin your research.

9

About Peptinexia

Built to make trustworthy access easier.

Peptinexia was built to simplify access to independently tested research peptides, with a focus on customer service.

01
Same-Day Responses
Real answers, not canned replies.
02
Direct Communication
Questions answered clearly. No unnecessary back-and-forth.
03
Accountability
If we do something wrong, we fix it.
Volume Discount
Up to 10% Off
Mix and match, discount automatic at 3+ vials.
Free Shipping
Orders $200+
UPS 2-Day InsureShield® included, nationwide.
Napa Valley · California
Based in Napa Valley. Shipping nationwide.
"We're still building. But the standard we hold ourselves to isn't going to change."