Research Disclaimer
This article reviews published scientific literature for educational purposes only. All compounds referenced are sold by Blank Peptides exclusively for in-vitro research and laboratory use. Nothing in this article constitutes medical advice, a treatment recommendation, or an endorsement of human use.
If you’ve recently tried to place an order on Peptide Sciences and found the site down, you’re not alone. Thousands of researchers have been scrambling to find a reliable replacement since Peptide Sciences ceased operations in late 2025. The closure was part of a broader wave of FDA enforcement actions that swept through the research peptide industry.
What Happened to Peptide Sciences?
Peptide Sciences was one of the most well-known research peptide suppliers in the US, operating for over a decade. Their shutdown came amid intensified regulatory scrutiny following the FDA’s reclassification framework:
- Enforcement wave — multiple established vendors taken down, including Amino Asylum
- Regulatory gray areas — vendors that failed to maintain rigorous compliance standards were systematically removed
- Significant gap left — researchers lost access to their primary source for BPC-157, TB-500, GH secretagogues, and more
What to Look for in a Replacement Vendor
Not every vendor claiming to fill the void is worth your trust. Here’s what separates legitimate suppliers:
- Third-party COAs — every batch independently tested with HPLC purity, mass spectrometry confirmation, and endotoxin testing
- Transparent manufacturing — disclosed synthesis processes and quality control protocols
- Clear RUO compliance — Research Use Only isn’t just a label, it’s a legal framework
- Professional infrastructure — proper documentation, clear policies, responsive service (built to last, not fly-by-night)
Blank Peptides: Built for This Moment
We built our operation from the ground up for researchers who valued Peptide Sciences’ commitment to quality — with every batch shipping with a third-party COA showing full HPLC analysis and mass spectrometry data.
Core Catalog Highlights
- BPC-157 — 10mg at $65 (vs. $80-100+ at remaining vendors)
- TB-500 — $60 with full analytical documentation
- Ipamorelin/CJC-1295 stack — $70, pre-combined for convenience
- GLP-1 agonists — Semaglutide ($75), Tirzepatide ($65), Retatrutide ($135)
- Specialty stacks — Wolverine (BPC-157 + TB-500), GLOW (BPC-157 + GHK-Cu), KLOW
Red Flags When Choosing a New Vendor
The post-Peptide Sciences landscape has attracted opportunistic sellers. Watch for:
- No verifiable COAs — or COAs that appear templated rather than batch-specific
- Extremely low prices — suggests underdosed or impure product
- New websites with no track record — launched in the last few months with no history
- Therapeutic claims — violates RUO compliance and signals the company doesn’t understand the regulatory framework
The Bottom Line
Losing Peptide Sciences was disruptive, but the research peptide market has matured. The vendors that remain — particularly those built around compliance and quality from day one — are better positioned to serve the research community long-term. We represent the new standard: pharmaceutical-grade purity, transparent documentation, competitive pricing, and a professional operation built to last.