P.
The Pep. Shop

Verification Required

Please select your research role to continue.
Research Use Only

All products on this website are sold strictly for in-vitro research and laboratory use only — not for human or veterinary use, consumption, or application. Not FDA approved to diagnose, treat, cure, or prevent any disease. Buyer assumes full responsibility for legal compliance in their jurisdiction.

By clicking Confirm & Enter, you confirm that you are a qualified researcher or laboratory professional, that you represent the affiliation type selected above, that you understand these products are for research purposes only, and that you are at least 21 years of age.

Your selection is stored locally and may be recorded for compliance purposes.
P.
The
Pep.
SHOP
Join The Pep Shop

Research you can

Verify.

We're a California-based research peptide company built around one idea: don't ask researchers to take purity on faith. Every compound we carry has a Certificate of Analysis — accessible by scanning the QR code on the tag, or by contacting us directly.

✓Certificate of Analysis available for every batch
✓5 independent tests per compound — purity, identity, sterility, endotoxins, heavy metals
✓60+ research products, ≥98% minimum purity
✓Direct email support — real answers within 48 business hours

Create Your Account

Create an account to complete your purchase and access batch documentation for your order.

All fields are required unless marked optional.

Must be at least 6 characters.

We'll email you a confirmation link to verify your address.

Terms of Service Privacy Policy Cookie Policy Shipping Policy Return Policy Research Compliance Acceptable Use Policy
Product added to cart
Your Cart ×
Subtotal$0
Catalog Our Story Quality FAQ Contact
Research-Grade  ·  Documentation Provided

Research‑grade peptides, verified.

Purity. Sterility. Potency. pH.
Every vial. Every time.

—
Data Points Per COA
Purity · Identity · Sterility · Endotoxins · Heavy Metals
—
Products Available
Across our full catalog
—
Minimum Purity
Enforced minimum, every batch
✓
Documentation
Certificate of Analysis Available Per Batch
Scroll

Every research compound from The Pep Shop is COA tested. Certificates of Analysis are available upon request, covering purity, identity, and safety data for the applicable batch.

US-Based & Shipped
Certificate of Analysis Provided
Batch Documentation Available
For Research Use Only
For Research Use Only — Not for Human or Animal Consumption. All products sold by The Pep Shop are intended strictly for laboratory research and in-vitro testing purposes only. The Pep Shop assumes no liability for any use outside this intended purpose.
Explore The Full Range

Every compound we carry.
One catalog.

60+ research products, independently tested, all in one place to shop.

Product Catalog

Our Peptide
Catalog.

Every product below has a Certificate of Analysis for its batch — each tag carries a QR code linking to the corresponding COA, or contact us for a copy. One catalog — everything we carry, in one place.

For Research Use Only — Not for Human or Animal Consumption. All products are intended strictly for laboratory research and in-vitro testing.
Research Compound

Product Name

📷Product Photo Pending
Batch / Lot Reference
Batch and lot numbers are assigned at time of shipment and included with every order. Request a Certificate of Analysis for any batch by emailing info@yourpepshop.com with your order number.
Select Size
Price
$0
A synthetic research compound. Certificate of Analysis available upon request for the applicable batch. For in-vitro laboratory research use only.
For Research Use Only — Not for Human or Animal Consumption. Not intended to diagnose, treat, cure, or prevent any disease.
Checkout

Complete Your Order.

Tell us where to send your order, then choose how to pay. Your card information is sent directly to our payment processor and never touches The Pep Shop's servers.

Order Summary
Subtotal$0
Shipping—
Sales tax—
Total$0
Our Story

Built on transparency.

Transparency isn't a slogan for us — it's the operating principle. Every batch gets documentation. Every question gets a straight answer. We'd rather tell you what we don't know yet than make a claim we can't stand behind.

≥98%
Minimum Purity
Enforced minimum, per batch
5×
Data Points Per COA
Purity, identity & safety data
COA
Documentation Provided
Available per batch
48h
Response Time
Business hours, order inquiries
Who We Are

The Pep Shop is a California-based research peptide company dedicated to serving qualified research institutions, laboratories, and licensed professionals. We believe rigorous documentation is non-negotiable in research.

We provide batch-specific Certificates of Analysis with every order because qualified researchers and institutions deserve full transparency — not marketing claims.

Our team brings diverse expertise in quality assurance, compliance, and customer service. We aim to respond to all order and documentation inquiries within 48 business hours and pride ourselves on treating every institution and licensed professional with professionalism and respect.

Quality compounds, complete documentation, responsive service — that is The Pep Shop.

Our Commitments
01
Documented, Not Assumed
Every compound has a Certificate of Analysis for its batch, accessible through the QR code on the tag or by contacting us. We don't ask you to take quality on faith.
02
Batch-Specific Documentation
Every batch is tied to a COA you can access by scanning the QR code on the tag or by contacting us — exactly what was tested, exactly what you received.
03
Professional Service Standards
We aim to respond to order, documentation, and COA inquiries within 48 business hours. We do not provide medical, clinical, or dosing guidance of any kind. All compounds are strictly for in-vitro laboratory research use.
04
Compliance Without Compromise
All products are strictly for research use. Our labeling, documentation, and operations are built around regulatory compliance — not around the line.
Quality & Testing

Every test.
Every batch.

Every compound from The Pep Shop is tested by an independent third-party laboratory before it reaches you. Five independent tests. Zero compromises.

3RD PARTY
Independent Testing
Third-Party Laboratory Verification

Every batch is tested by a laboratory with no ownership stake or financial interest in The Pep Shop. Testing covers purity, identity, sterility, endotoxins, and heavy metals — using the equipment, methods, and quality controls trusted across the research industry.

✓ Independently Tested — Results Provided Per Batch
The Testing Process

Five steps.
No shortcuts.

01
HPLC — High Performance Liquid Chromatography
Purity Analysis
Each compound is run through HPLC to separate and quantify all components. This identifies what percentage of the sample is the target peptide versus impurities, degradation products, or residual synthesis materials. This is an industry-standard purity measurement used by pharmaceutical and research laboratories.
Our Standard
≥98%
Industry minimum: 96%
02
LC-MS — Liquid Chromatography Mass Spectrometry
Identity Confirmation
Mass spectrometry confirms the molecular weight and fragmentation pattern of the compound matches the expected sequence. This is the definitive test that what's in the vial is actually what the label says — not a structural analog, not a substitute, not a mislabeled batch.
Result
Confirmed
Sequence match required
03
LAL Assay — Limulus Amebocyte Lysate
Endotoxin Screening
Bacterial endotoxins (lipopolysaccharides) are invisible contaminants that can cause severe immune responses in research applications. The LAL assay detects endotoxin levels with extreme sensitivity. Compounds must fall below established thresholds to pass — protecting the integrity of any research application they're used in.
Threshold
<1 EU/mg
Endotoxin units per mg
04
USP <71> Sterility Testing
Sterility Verification
Conducted under United States Pharmacopeia protocol <71>, sterility testing confirms the absence of viable microorganisms — bacteria, fungi, and yeast — in each batch. Samples are incubated in selective growth media under controlled conditions. Any growth constitutes a failure. The batch must be sterile before it ships.
Result
Pass
Zero growth permitted
05
ICP-MS — Inductively Coupled Plasma Mass Spectrometry
Heavy Metals Screening
ICP-MS is the gold standard for detecting trace heavy metals — lead, mercury, arsenic, cadmium, and others — at parts-per-billion sensitivity. Residual metals can originate from synthesis reagents, equipment, or environmental contamination. This test ensures levels are below limits that would compromise research validity or safety of the laboratory environment.
Detection
ppb
Parts-per-billion sensitivity
Certificate of Analysis

Scan the tag.
See the data.

Example — scan the tag on your vial

Every tag from The Pep Shop carries a QR code linked directly to the COA for that specific lot number. Five data points. One scan. Full transparency, batch by batch.

Not a library of sample certificates — the certificate for the vial in your hand. A COA posted on a website documents one lot, which may not be the lot you received. Scanning your own tag returns the record for that exact batch, which is the only version that tells you anything about your material.

A Certificate of Analysis reports laboratory measurements for a batch of research material. It is not a safety evaluation, not an approval of any kind, and does not indicate that a product is suitable for use in humans or animals. These products are sold for laboratory research use only.

How to read a Certificate of Analysis
Example compound
Lot: your vial's lot number appears here
Sample layout — figures below are illustrative
Purity (HPLC)
✓ 98.7% Pass
Identity (LC-MS)
✓ Confirmed
Endotoxins (LAL)
✓ <0.1 EU/mg
Sterility (USP 71)
✓ No Growth
Heavy Metals (ICP-MS)
✓ Below Threshold
How to Read This
Purity (HPLC)
Measures how much of the vial is the actual compound versus impurities. Higher is better.
Identity (LC-MS)
Confirms the molecule matches what's on the label — not a substitute or contaminant.
Endotoxins (LAL)
Checks for bacterial byproducts. Lower is better for research-grade material.
Sterility
Confirms no microbial growth was detected in the sample.
Heavy Metals
Screens for lead, arsenic, mercury, and cadmium contamination.
Contact Us

We aim to respond
within 48 hours.

Every inquiry from a researcher is treated with the same professionalism we put into our products. No auto-replies. Real answers.

Email
info@yourpepshop.com
For all inquiries — orders, COA requests, research questions, and general support. We aim to respond within 48 business hours.
Response Time
Within 48 Business Hours
Monday through Friday. We take all inquiries from qualified institutions and licensed professionals seriously and always respond with complete information.
COA Requests
Available on Request
Batch-specific Certificates of Analysis are available by emailing your lot number to info@yourpepshop.com.
Send a Message

We aim to respond to all inquiries at info@yourpepshop.com within 48 business hours.

Frequently Asked Questions

Questions,
answered.

Everything you need to know about our compounds, testing process, and documentation. Click any question to expand.

What does lyophilized powder mean?
+
Lyophilization is a freeze-drying process used to preserve the structural integrity of sensitive research compounds. The compound is frozen and then placed under a vacuum, which removes water content through sublimation. The result is a stable, dry powder that maintains compound integrity during storage and shipping. All compounds from The Pep Shop are supplied in lyophilized form for research use.
What does independent third-party testing mean?
+
Independent third-party testing means the laboratory analyzing our compounds has no ownership stake or financial interest in The Pep Shop. The lab uses validated methods and calibrated instruments to produce results that are objective and reproducible, rather than relying on any claim made by the seller. All compounds from The Pep Shop are tested by an independent third-party laboratory.
What is a Certificate of Analysis and how do I access mine?
+
A Certificate of Analysis (COA) is a formal document issued by an independent third-party laboratory confirming the test results for a specific batch of a compound. It includes results for purity, identity, sterility, endotoxin levels, and heavy metals screening.

Scan the QR code on your vial's tag. It links to the COA for that exact lot — not a general sample, but the certificate for the vial you received. If you'd rather not scan, email info@yourpepshop.com with your lot number and we'll send it to you.
Who performs your third-party testing?
+
All research compounds from The Pep Shop are tested by an independent third-party analytical laboratory. Testing is conducted entirely by a facility we do not own, operate, or have financial interest in. This ensures our results are objective, defensible, and free from any conflict of interest.
Can I request a COA before purchasing?
+
Yes. Batch-specific Certificates of Analysis are available upon request prior to purchase. Email info@yourpepshop.com with the compound name and lot number if known, and we will provide the corresponding COA documentation. We believe transparency should come before the transaction, not after.
How do I contact you?
+
You can reach us at info@yourpepshop.com. We are a California-based research compound company serving qualified research institutions, laboratories, and licensed professionals. All inquiries are handled directly — no automated responses.
How quickly do you respond to inquiries?
+
We aim to respond to all order, documentation, and COA inquiries within 48 business hours, Monday through Friday. We do not provide medical, clinical, or dosing guidance of any kind. For questions outside the scope of order and documentation support, we are unable to assist.
Why does lab independence matter for a COA?
+
A COA is only as trustworthy as the lab that produced it. When a testing lab has no ownership stake or financial interest in the seller, its equipment calibration, staff competency, and internal quality controls are the only thing standing behind the result — not a relationship with us. In practical terms, it means the purity and identity data on your COA came from a process that has been verified by a third party, not just claimed by the seller.
What should I look for when reading a Certificate of Analysis?
+
A meaningful COA should show the testing lab's name, the batch or lot number matching your product, purity percentage (typically via HPLC), identity confirmation (typically via mass spectrometry), and results for sterility and endotoxins where applicable. If a COA is unsigned, undated, or doesn't reference a specific batch, treat it as incomplete.
Why does batch traceability matter?
+
Every batch we sell is tied to a specific lot number, which connects back to its own independent test results. This means if a question ever arises about a specific vial, we can trace it to the exact batch it came from and the exact data behind it — rather than relying on a general claim about the product line as a whole.
How do you approach regulatory compliance?
+
All products are sold strictly for in-vitro laboratory research use. We do not make any claims about human health outcomes, and our product listings, packaging, and marketing are reviewed against current FDA guidance on research-use-only labeling.
For Providers & Institutions

Research partnerships.
Built to scale.

We work with research institutions, laboratories, and qualified professionals who need consistent supply, batch-level documentation, and a direct line of communication. If your order volume exceeds our standard catalog quantities, we'll build a bulk pricing structure around your needs.

Bulk & Institutional Orders
10+ Units, Per Compound
If you're ordering 10 or more units of a single compound, contact us directly before checking out. We'll work with you on pricing and — just as importantly — make sure we have enough supply lined up so a large order doesn't leave other researchers waiting. It's about keeping the whole catalog well-stocked, not just filling one order.
Who We Work With
Research laboratories, academic institutions, licensed professionals, and qualified organizations conducting in-vitro research. All institutional accounts are subject to the same RUO terms as standard orders.
Direct Line
info@yourpepshop.com
Email us with your institution name, anticipated order volume, and compounds of interest. We aim to respond within 48 business hours.

For Research Use Only — Not for Human or Animal Consumption. Institutional accounts are subject to the same research-use terms as all orders from The Pep Shop.
Legal

Policies & Terms.