01
Documented purity
No purity claims without paperwork. Every product page links its current lot certificate, so you can verify before adding to cart.
LOT-TESTED · COA WITH EVERY ORDER · RUO
Research peptides, verified to the vial
Pepéra Labs supplies ≥99% purity peptides with a published, lot-specific Certificate of Analysis for every batch. Check the COA before you order — not after.
- ≥99% HPLC purity
- COA with every lot
- Same-day dispatch
PURITY 99.4%
METHOD HPLC-MS/MS
STATUS VERIFIED
CATALOG · MOST REQUESTED
Best sellers
The compounds researchers reorder most, selected for batch consistency and documented purity.
QUALITY · TRANSPARENCY
Every lot, on the record
Each batch is tested twice — once at synthesis, once by an independent third-party laboratory — for identity, purity, endotoxins, and heavy metals. The certificate is published to the product page before the lot goes on sale.
- HPLC purity with the chromatogram attached
- Mass spectrometry identity confirmation
- Lot number printed on every vial, searchable on site
CERTIFICATE OF ANALYSIS
PEPÉRA LABS
- LOT
- RT-3-001
- APPEARANCE
- LYOPHILIZED POWDER
- PURITY (HPLC)
- 99.4%
- METHOD
- HPLC-MS/MS
- ENDOTOXIN
- < 0.11 EU/ML
- HEAVY METALS
- CONFORMS (ICH Q3D CLASS 1)
WHY PEPÉRA
Built for research confidence
02
Cold-chain aware shipping
Lyophilized vials packed with insulation and shipped priority. Orders placed before 2 pm ET dispatch the same day.
03
Straightforward support
Questions about a lot, a certificate, or an order are answered by a person, usually within one business day.
EVERY ORDER
What ships with every order
No claims we cannot document. Here is exactly what arrives.
01
Lot-labelled vials
Every vial is printed with its lot number so it can be matched to its certificate at any time.
02
Certificate of Analysis
The certificate for your lot is published on this site and linked from the product page before purchase.
03
Tracked delivery
Orders ship with tracking and protective packaging. Delivery timeframes are set out on the Shipping & Returns page.
SUPPORT
Frequently asked questions
Are your products for human use?
No. Everything sold on this site is supplied strictly for laboratory research and development. Products are not for human or veterinary use of any kind, and ordering requires confirming you are 21+ and agree to research-use terms.
How do I verify a Certificate of Analysis?
Each vial is printed with a lot number. Enter it on the Lab Results page, or open the COA linked from the product page — the certificate lists purity, identity, endotoxin, and heavy-metal results for that specific lot.
How fast do orders ship?
In-stock orders placed before 2 pm ET dispatch the same business day with tracking. Most orders arrive within 2–3 business days.
How should products be stored on arrival?
Storage and handling conditions are listed on each product page and certificate. Follow your laboratory's standard procedures for lyophilized materials.
What is your return policy?
If an order arrives damaged or a lot fails to match its certificate, contact support within 7 days with your order number and lot number for a replacement or refund. Full details are on the Shipping & Returns page.
CONTACT
Ask about a lot, an order, or a certificate
A person reads every message — replies usually land within one business day.