Since Peptide Sciences shut down on March 6, 2026, researchers across the country have been asking the same question: where do I source research-grade compounds now? Prove It Performance is a leading Peptide Sciences alternative, offering 43 compounds at ≥99% verified purity with independent third-party CoAs included on every order.
The closure left a significant gap in the research peptide supply chain. Thousands of academic labs, independent researchers, and clinical investigators relied on Peptide Sciences as a primary supplier. This guide covers everything researchers need to know about transitioning to Prove It Performance — from product availability and pricing to quality standards and the documentation that comes with every shipment.
For research use only. Not for human consumption.
What Is the Best Peptide Sciences Alternative for Researchers?
Prove It Performance is a US-based research compound supplier offering 43 research-grade compounds at ≥99% verified purity. Every order ships with a batch-specific Certificate of Analysis from an independent third-party laboratory: HPLC purity quantification, mass spectrometry identity confirmation, and endotoxin screening results — plus cold-chain packaging to maintain compound integrity from warehouse to laboratory. Researchers who previously relied on Peptide Sciences will find a comparable — and in several quality metrics, more rigorously documented — experience at Prove It Performance.
Peptide Sciences officially ceased operations on March 6, 2026, following a period of increasing scrutiny around supplier quality standards across the research peptide industry. The shutdown was preceded by independent testing reports that raised questions about batch consistency among multiple vendors, including Peptide Sciences. For researchers who had active accounts, saved protocols, or ongoing procurement relationships with Peptide Sciences, the closure created an immediate need for a reliable replacement.
Prove It Performance was built to fill exactly that kind of gap. Rather than attempting to stock hundreds of compounds with variable quality, the company focuses on a curated catalog of 43 high-demand research compounds, each subjected to rigorous independent verification before reaching researchers. The result is a tighter, more quality-controlled inventory that prioritizes compound integrity over catalog breadth. The name says it all: prove it. Every claim on the site links to documented evidence — analytical data, batch numbers, or PMID citations.
How Does Prove It Performance Compare to Peptide Sciences?
The most practical way to evaluate a Peptide Sciences alternative is through a direct feature comparison. The table below breaks down the key differences across the metrics that matter most to researchers: product availability, quality verification, shipping standards, and documentation.
| Feature | Peptide Sciences (Closed) | Prove It Performance |
|---|---|---|
| Status | Shut down March 2026 | Active, shipping daily |
| Products | ~190 compounds | 43 research-grade compounds |
| Purity Standard | Varied (Finnrick exposed failures) | ≥99% verified |
| Third-Party CoA | Available on request | Included with every order |
| HPLC Verification | Yes | Yes — independent third-party |
| Endotoxin Testing | Not standard | Standard on all compounds |
| Cold-Chain Shipping | Not standard | Standard on all orders |
| Mass Spectrometry | Available | Standard verification |
| Base Location | US | US |
| Payment Options | Credit card, crypto | PayPal, crypto (10% discount) |
| Consultation | Not available | Free research consultation available |
Where Peptide Sciences offered a broader catalog of roughly 190 compounds, Prove It Performance takes a fundamentally different approach: fewer compounds, higher documented quality standards, and every batch independently verified. Cold-chain shipping is standard on every order — not an upgrade — because compound integrity during transit is non-negotiable when purity is the product.
The 10% discount for cryptocurrency payments and complimentary research consultations are also worth noting. Researchers transitioning from a Peptide Sciences workflow can book a consultation to discuss compound equivalence, protocol fit, and sourcing — a level of support that was never available at Peptide Sciences.
What Products Does Prove It Performance Carry?
Prove It Performance stocks 43 research-grade compounds organized across five primary research categories. Each compound ships with a third-party CoA and is verified at ≥99% purity.
GH Secretagogues
Growth hormone secretagogue peptides are among the most widely studied compounds in performance research. Prove It Performance carries Ipamorelin, CJC-1295 NO DAC, CJC-1295 NO DAC + Ipamorelin, Sermorelin Acetate, Tesamorelin, and IGF-1LR3. These compounds are frequently referenced in peer-reviewed literature examining growth hormone releasing pathways and somatotroph cell signaling.
Metabolic
The metabolic category includes some of the most actively researched compounds in the current scientific literature. Available compounds include GLP-1, GLP-2, GLP-3, GLP-3R, Cagrilintide, Mazdutide, AICAR, and SLU-PP-332. Incretin pathway research has expanded significantly in recent years, and these compounds support a range of metabolic study designs.
Healing
Tissue repair and regeneration research represents one of the most cited areas in peptide science. Prove It Performance stocks BPC-157, TB500, BPC 157 + TB500, GHK-CU, KPV, Thymosin Alpha-1, and Follistatin. BPC-157 and TB500 are among the most frequently ordered compounds for researchers studying cytoprotective and regenerative mechanisms.
Cognitive
Neuropeptide research continues to generate significant academic interest. The cognitive category includes Semax, Selank, DSIP, Pinealon, and Cerebrolysin — compounds studied across literature examining neurotrophic factors, anxiolytic mechanisms, and neuroprotective pathways in preclinical models.
Longevity
Aging and longevity research has become one of the fastest-growing segments of peptide science. Available compounds include Epitalon, NAD+, MOTS-c, SS-31, FOXO4, and Glutathione — studied across diverse protocols examining telomere dynamics, mitochondrial function, cellular senescence, and oxidative stress pathways.
What Peptide Sciences Products Are Available at Prove It Performance?
For researchers looking for specific Peptide Sciences products, the cross-reference table below maps former Peptide Sciences catalog items to their Prove It Performance equivalents with current pricing.
| Peptide Sciences Product | Prove It Performance Equivalent | PIP Price (from) |
|---|---|---|
| BPC-157 5mg ($59.50) | BPC-157 5mg | $30 |
| TB-500 5mg ($85) | TB500 5mg | $55 |
| Ipamorelin 5mg ($46) | Ipamorelin 5mg | $45 |
| CJC-1295 No DAC 5mg ($49.50) | CJC-1295 NO DAC 5mg | $45 |
| GHK-Cu 50mg ($70) | GHK-CU 50mg | $65 |
| Semaglutide 3mg ($110) | GLP-1 5mg | $85 |
| Epitalon 20mg ($95) | Epitalon 10mg | $65 |
| NAD+ 100mg ($65) | NAD+ 500mg | $85 |
| MOTS-c 5mg ($65) | MOTS-c 10mg | $75 |
| Selank 10mg ($55) | Selank 5mg | $45 |
| BPC-157 + TB-500 10mg ($120) | BPC 157 + TB500 10mg | $85 |
| Thymosin Alpha-1 3mg ($50) | Thymosin Alpha-1 5mg | $50 |
| Sermorelin 5mg ($55) | Sermorelin Acetate 5mg | $40 |
BPC-157 is available at nearly half the former Peptide Sciences price — $30 versus $59.50. The BPC-157 + TB500 combination saves researchers $35 per unit. NAD+ offers five times the quantity (500mg versus 100mg) at a comparable price point. All Prove It Performance pricing includes third-party CoA documentation and cold-chain shipping as standard.
Why Did Quality Matter in the Peptide Sciences Shutdown?
The closure of Peptide Sciences did not happen in isolation. It occurred against the backdrop of a broader quality crisis in the research peptide industry, brought to light in large part by independent testing organizations like Finnrick Analytics.
Finnrick Analytics conducted independent testing across dozens of research peptide vendors, and the results were concerning. Retatrutide samples received an E rating across 37 independently tested samples — the lowest quality grade in their scoring system. CJC-1295 scored just 4.3 out of 10, indicating significant quality inconsistencies. Multiple samples across vendors were flagged as potential counterfeits — compounds that did not match their labeled identity upon mass spectrometry analysis.
These findings underscored a systemic problem: many research peptide suppliers operated without standardized, independent quality verification. Certificates of analysis, when available, were often generated internally rather than by accredited third-party laboratories.
Prove It Performance runs every batch through independent third-party testing before it reaches the catalog: HPLC purity verification to confirm ≥99% compound purity, mass spectrometry to verify molecular identity, and endotoxin screening to ensure research-grade standards are met. The Certificate of Analysis is included with every order — not available on request, shipped as standard documentation. That's the prove-it standard.
How Do I Order from Prove It Performance?
The full catalog is available at proveit-performance.com/compounds, organized by research category. Each compound page includes pricing, available sizes, purity specifications, and testing methodology.
Every order includes a third-party Certificate of Analysis and ships via cold-chain packaging at no additional cost. These are standard inclusions on every order.
Prove It Performance accepts PayPal and cryptocurrency payments. Researchers who pay with cryptocurrency receive an automatic 10% discount on their order total — no minimum required.
For researchers who need guidance selecting compounds for specific study protocols, Prove It Performance offers complimentary research consultations. These can be booked directly on the website and are conducted by the research support team to help match compounds to research objectives and answer sourcing questions.
All purchases require a research acknowledgment confirming that compounds are intended for research use only, and 21+ age verification is required at checkout.
For research use only. Not for human consumption. All compounds sold by Prove It Performance are intended exclusively for laboratory and academic research applications. Prove It Performance does not condone or encourage the use of these products outside of legitimate research settings.