Peptide Sourcing Guide
How to evaluate peptide sources, verify authenticity, and identify reliable vendors for your research needs.
Research Purposes Only
This guide is for educational purposes. Always verify vendor legitimacy and ensure compliance with applicable laws in your jurisdiction.
Types of Peptide Sources
Domestic Suppliers
Vendors operating within your country offer several advantages:
- Faster shipping: 2-5 day delivery typical
- No customs: Avoids import complications
- Easier returns: More accessible customer service
- Payment options: Usually more payment methods
International Suppliers
Overseas vendors (often China-based) have different considerations:
- Lower prices: Often 50-70% cheaper
- Longer shipping: 2-4 weeks typical
- Customs risk: Packages may be inspected or seized
- Communication: May have language barriers
Evaluating Vendor Quality
Essential Criteria
| Factor | What to Look For | Red Flag |
|---|---|---|
| Third-Party Testing | HPLC and Mass Spec COAs | No testing or only in-house |
| Purity Claims | Specific % with documentation | Vague "high purity" claims |
| Website Quality | Professional, informative | Poor grammar, no contact info |
| Community Reviews | Verified purchase reviews | Only testimonials on own site |
| Payment Methods | Credit card, crypto options | Only wire transfer/gift cards |
Verification Steps
- Search for reviews on Reddit, forums, and independent sites
- Request COA for specific batch before purchasing
- Verify COA authenticity - contact testing lab directly if possible
- Start with small order to test vendor reliability
- Consider independent testing of received product
Understanding COAs
A Certificate of Analysis (COA) should include:
- Product name: Exact peptide identity
- Batch/Lot number: Specific production run
- Purity percentage: From HPLC testing
- Mass confirmation: MS showing correct molecular weight
- Test date: Recent, ideally within 6 months
- Lab name: Identifiable third-party lab
Pro Tip: A legitimate COA will match the specific batch you're purchasing. Generic or template COAs are a red flag.
Price Considerations
Understanding typical price ranges helps identify both scams and unusually cheap product:
Typical Domestic Pricing (US)
- BPC-157 (5mg): $30-50
- TB-500 (5mg): $35-55
- Ipamorelin (5mg): $25-45
- CJC-1295 (2mg): $25-40
Price Red Flags:
- Prices 50%+ below market average
- Inconsistent pricing across products
- Hidden fees at checkout
Shipping & Handling
What to Expect
- Packaging: Lyophilized powder in sealed vials
- Cold shipping: Usually not required for short transit
- Discrete packaging: Most vendors use plain packaging
- Tracking: Legitimate vendors provide tracking
Upon Receipt
- Check seal integrity
- Verify vial labeling matches order
- Inspect powder appearance (should be white/off-white)
- Store properly immediately (refrigerated, away from light)
Community Resources
Where researchers discuss vendor experiences:
- Reddit communities (r/Peptides)
- Dedicated peptide forums
- Independent review aggregators
Disclaimer: We do not endorse specific vendors. Always conduct your own due diligence and verify current vendor reputation before purchasing.