What purity standard does Prove It Performance apply to every compound?
Every compound at Prove It Performance is held to a minimum ≥99% purity standard, verified by reverse-phase High-Performance Liquid Chromatography (HPLC) with UV detection at 214 nm — the standard wavelength for peptide bond detection. This isn't a blanket marketing claim. The actual measured purity percentage for that specific batch is documented on the Certificate of Analysis that ships with every order. Batches that fall below the threshold are rejected before they ever reach inventory. Published research confirms that purity at this level is the minimum threshold for reproducible results in receptor binding assays and cell culture studies — even trace impurities can confound binding kinetics and cellular uptake data (PMID: 19549937). Researchers receive documented, measurable results, not vague spec sheet assertions.
How does Prove It Performance verify compound identity and purity?
Prove It Performance runs every compound through two independent analytical methods before release. HPLC provides purity quantification by separating compound components based on hydrophobicity and calculating target peak area as a percentage of total peak area. LC-MS/MS confirms molecular identity via electrospray ionization — measured mass-to-charge ratio is compared to theoretical values within ±0.5 Da tolerance. Both methods are performed by ISO 17025 accredited third-party laboratories with no connection to synthesis. Endotoxin testing via the Limulus Amebocyte Lysate (LAL) assay is also run for cell culture applications to confirm bacterial contamination levels meet research-grade standards. Published guidelines establish this dual-method approach as the baseline for credible peptide quality verification (PMID: 19549937, PMID: 25342275). All three results are compiled into the batch-specific Certificate of Analysis included with every shipment.
What is HPLC verification and why does it matter?
High-Performance Liquid Chromatography separates compounds in a mixture based on interaction with a stationary phase. For peptide verification, reverse-phase HPLC is used — compounds elute through a hydrophobic silica column at different rates based on their affinity for the stationary phase. A UV detector at 214 nm records peptide bond absorbance, producing a chromatogram where each peak represents a distinct compound. Purity is calculated as target peak area divided by total detected peak area — expressed as a percentage. This technique is quantitative, reproducible, and the gold standard for peptide purity assessment in both academic and industrial research settings (PMID: 19549937). What makes it actionable for researchers: you get the actual purity percentage from that specific batch, not a theoretical specification. That number goes on your CoA. If a supplier can't produce the underlying chromatographic data, treat their purity claims with serious skepticism.
How should research peptides be stored to maintain stability?
Lyophilized peptides should be stored at -20°C in a frost-free freezer. The freeze-dried form provides maximum stability by protecting peptide bonds from hydrolysis and oxidation. Compounds containing light-sensitive residues — particularly tryptophan or tyrosine — require protection from direct light exposure; amber glass vials handle this, but dark storage adds additional protection. Keep vials sealed until needed to prevent moisture uptake. Published research demonstrates that properly handled lyophilized peptides stored at -20°C maintain stability for 24 months or longer (PMID: 15283699). Minimize thermal cycling — repeated freeze-thaw cycles promote aggregation and degradation. For any prepared solutions, aliquot into single-use volumes and store at -20°C to prevent repeated temperature excursions. Storage requirements are specified on product labels and Certificates of Analysis.
How do I read a Certificate of Analysis?
A Certificate of Analysis documents the full analytical test record for a specific production batch. The sections that matter most: batch number (unique identifier for traceability), test date, testing methodology, and numerical results. For peptide compounds, look for HPLC purity as a percentage — above 99% is what Prove It Performance requires. Mass spectrometry results will show observed molecular weight compared to theoretical value; ±1 Da tolerance is standard. Endotoxin results are expressed in EU/mg or EU/vial — lower is better for cell culture applications. Each result includes acceptance criteria; a batch fails if anything falls outside spec. The CoA should be signed by quality personnel at the testing laboratory. If a CoA doesn't include a specific batch number, a testing date, and the identity of the testing lab — it's not a real CoA. Contact our team if you need help interpreting any documentation for your specific research application.
Does Prove It Performance offer bulk or institutional pricing?
Yes. Bulk and institutional pricing is available for qualified research organizations with ongoing compound requirements. Bulk pricing typically applies to orders exceeding standard catalog quantities — multiple vials of the same compound or gram-scale amounts. Institutional accounts are available for universities, research institutes, and biotechnology companies. To request pricing, submit an inquiry through our bulk orders page with the compound name, quantity, and research application context. We review requests and respond with custom quotations based on current inventory and synthesis schedules. Bulk orders may carry extended lead times depending on analytical testing queues. All bulk orders include the same third-party CoA documentation as standard catalog orders — quality standards don't change at volume. Institutional accounts with ongoing procurement needs may be eligible for dedicated account management and priority processing.
What are the shipping standards?
All orders ship via express service. Standard delivery is 1-3 business days for domestic US orders via expedited ground or air service depending on destination and transit time. Orders are processed within 1-2 business days. Tracking is provided upon shipment. We recommend inspecting packaging immediately on delivery and contacting support immediately if any packaging issues are observed. Shipping costs are calculated at checkout based on destination and package weight.
What is the refund policy for research compounds?
All sales are final for research-grade compounds. Prove It Performance maintains rigorous quality control at every stage specifically to ensure that what ships is what was ordered. However, if an order arrives with damaged packaging, contains an incorrect compound, or fails to meet documented specifications, contact us immediately at contact@proveit-performance.com. Quality-related issues require photo documentation of the problem and the Certificate of Analysis for review. For temperature-compromised shipments, photo documentation of temperature indicators and outer packaging is also required. We process quality complaints quickly and are committed to making legitimate issues right. Order cancellations must be submitted before dispatch — once an order ships, it cannot be recalled. Reach out as early as possible on cancellations; we process orders quickly and cannot guarantee cancellation windows.
How are compounds packaged to maintain integrity during transit?
Lyophilized peptides are sealed in amber glass vials under nitrogen atmosphere to prevent oxidation and moisture absorption. Vials are fitted with rubber septa and secured with aluminum crimp seals, providing an airtight barrier while maintaining compatibility with standard laboratory handling equipment. The amber glass addresses photodegradation for light-sensitive compounds. Individual vials are placed in cushioned boxes to prevent breakage. Outer shipping boxes carry handling instructions and orientation markers. This multi-layer approach — nitrogen atmosphere, amber glass, crimp seal, and cushioned inner box — protects compound integrity against the full range of transit hazards: light, moisture, temperature, and mechanical impact.
What research categories do the compounds cover?
Prove It Performance organizes its catalog into five research categories based on primary mechanism and published literature focus. Metabolic compounds include GLP-1 analogs and mitochondrial-derived peptides studied for glucose regulation and energy metabolism pathways (PMID: 30215696). Healing compounds encompass cytoprotective peptides and tissue repair factors investigated for extracellular matrix interactions (PMID: 35489163). Cognitive compounds cover neuromodulatory peptides and neurotrophic factors studied for synaptic plasticity mechanisms (PMID: 16445185). GH Secretagogues are growth hormone-releasing hormone analogs characterized for pituitary receptor binding (PMID: 15775957). Longevity compounds include telomerase activators and mitochondrial-targeted peptides studied for cellular senescence pathways (PMID: 19619679). These are research classifications based on published preclinical literature — not therapeutic indications. Individual compounds may exhibit cross-category activity given the complexity of receptor interactions documented in the literature.
Why does Prove It Performance cite PMIDs on every product page?
Because "documented in published research" means nothing without the citation. PubMed Identifiers (PMIDs) link directly to peer-reviewed studies in the NCBI PubMed database, allowing researchers to verify every molecular claim independently. We cite PMIDs for receptor targets, binding mechanisms, and preclinical findings — every scientific assertion on our product pages traces back to something reviewable. This is how academic research operates, and it's the standard we hold ourselves to as a supplier serving researchers. Competitors make unsupported quality and mechanism claims constantly. We don't. If we're saying a compound has documented interaction with a specific receptor pathway, you should be able to pull that study and read it yourself. All PMIDs on our site carry a "VERIFY PMID" flag pending human review before final publication — we'd rather flag uncertainty than overstate confidence.
What qualifications are required to purchase?
Purchasers must be 21 years of age or older and confirm that compounds are being procured for legitimate research purposes. All orders require acceptance of our Research-Only Terms of Service, which explicitly states that compounds are intended exclusively for in vitro laboratory research and are not for human or veterinary use. Prove It Performance is not a pharmacy or compounding facility, and our compounds are not drugs, supplements, or food products. They have not been evaluated by the FDA for any therapeutic purpose. These requirements exist because research compounds have genuine laboratory applications and our distribution practices are designed to support that — not to circumvent them. Institutional purchasers with procurement workflows requiring additional documentation can contact us for invoices and CoA formats compatible with grant reporting and institutional record-keeping systems.
Research Use Only: All compounds sold by Prove It Performance are intended exclusively for laboratory research. Not for human or animal consumption. These products are not drugs, supplements, or food. Statements have not been evaluated by the FDA. Must be 21+ to purchase.