Frequently Asked Questions
Comprehensive answers about our materials, processes, and operational standards. Every response reflects our actual policies and documented procedures.
Product Quality & Documentation
Reference-grade materials are manufactured under controlled conditions with rigorous analytical verification at every stage. Each lot undergoes HPLC for purity quantification, mass spectrometry for molecular identity confirmation, and additional testing for sterility and residual solvents where applicable.
Our patent-pending lot tracking system ensures:
- Every vial is labeled with a unique lot number printed directly on the label
- That lot number corresponds to a current, dated Certificate of Analysis specific to that production batch
- The same lot-specific purity percentage, quantity (mg), and analytical data appear on both the product page and the COA
- Complete traceability from synthesis through final product delivery
This level of documentation ensures reproducibility across experiments and provides the analytical foundation required for rigorous research.
Each order includes comprehensive lot-specific documentation provided with shipment and accessible via the product page:
- Certificate of Analysis (COA): Current, dated document listing purity percentage, molecular weight, appearance, and analytical methodology for the specific lot shipped
- HPLC Chromatogram: Full chromatographic trace showing purity determination
- Mass Spectrum: MS data confirming molecular identity
- Safety Data Sheet (SDS): Hazard information and laboratory safety guidelines
All documentation is sealed in a protective envelope within the package. The lot number printed on the vial label matches the COA exactly, ensuring complete traceability.
Purity is quantified using HPLC (High-Performance Liquid Chromatography) with UV detection at 214 nm or 220 nm, the industry-standard wavelengths for peptide bond absorption. The purity percentage represents the area under the main peak relative to all detected peaks in the chromatogram.
Purity values are reported as percentages (e.g., 98.3% by HPLC) and documented in the COA alongside the corresponding chromatogram. This transparency allows researchers to assess material quality and make informed decisions about experimental design.
Every lot is synthesized using standardized procedures and verified against defined acceptance criteria for purity (typically ≥95% by HPLC), identity (confirmed by mass spectrometry), and physical appearance. If a lot does not meet specifications, it is rejected and not released for distribution.
We maintain batch records documenting synthesis parameters, purification steps, and analytical results. Reference samples are retained for retrospective analysis if questions arise.
Ordering & Shipping
Orders are typically processed and shipped within 1-3 business days of payment confirmation, subject to product availability and successful verification. Transit time depends on shipping method selected:
- First Class Mail: 3-5 business days (estimated)
- Priority Mail: 2-3 business days (estimated)
- Priority Mail Express: 1-2 business days (estimated)
Shipping timeframes are carrier estimates and not guaranteed. Processing may be delayed for verification, payment authorization review, or product availability issues.
No. We ONLY ship to addresses within the United States. U.S. territories are served case-by-case upon verification (currently Puerto Rico and Guam only; American Samoa not served).
We do not ship internationally, to freight forwarders, mail forwarding services, or APO/FPO/DPO addresses. Products may not be exported or re-exported outside the United States. Orders with international shipping addresses will be cancelled and refunded, less any processing fees.
All peptides are supplied as lyophilized powders in sealed glass vials labeled with product name, lot number, quantity (mg), and storage recommendations.
Packaging includes:
- Individual vials wrapped in protective foam and/or bubble wrap to prevent breakage
- Foil-lined or insulated mailers providing thermal protection from temperature extremes
- Additional protective materials and cushioning as needed
- All documentation (COA, packing slip) sealed in protective envelope
Temperature considerations: We do NOT offer temperature-controlled shipping, refrigerated shipping, or cold chain logistics (no ice packs, gel packs, or insulated coolers). Lyophilized peptides are stable at ambient shipping temperatures for short periods, which is standard practice for shipping research peptides in powder form.
Products are shipped at ambient temperature. Upon receipt, immediately transfer to appropriate storage conditions (-20°C or colder).
All order issues must be submitted through our Contact Form with your order number.
Lost packages (with Shipping Protection): If tracking shows no movement for 7 business days, or the carrier marks a package as lost, submit the Contact Form with your order number and we will reship your order or issue a refund at our discretion. We handle the carrier claim on our end, so you do not need to file one.
Lost packages (without Shipping Protection): Submit the Contact Form with your order number and we will file the claim with the carrier on your behalf and pass on any amount the carrier pays.
Delivered but not received: If tracking shows the package was delivered to the address you provided and you did not receive it, submit the Contact Form within 48 hours of the delivery scan. We will request a carrier trace and, where available, GPS delivery confirmation.
Incorrect address, refused, or returned to sender: We are not able to replace these orders; they will be refunded less shipping and a 15% restocking fee.
A tracking number will be provided once your order ships.
All sales are final. All products are sold for in vitro research use only. Due to the nature of research chemicals and applicable regulations, we do not accept returns or exchanges once an order has shipped, except as described in our Returns & Refunds policy or as required by law.
Damaged, defective, or wrong items: Submit the Contact Form with your order number and photos within 48 hours of delivery and we will replace the item or refund it at our discretion. No returns are needed.
Order cancellation: Orders may be cancelled for a full refund until a shipping label has been created. Once a label is generated, the order has entered fulfillment and cannot be cancelled, recalled, or redirected. To request cancellation, submit the Contact Form with your order number. Approved refunds are returned to the original payment method within 5–7 business days.
Storage & Handling
Lyophilized peptides should be stored at -20°C or colder in original sealed vials until ready for use. For long-term storage (>6 months), -80°C is recommended.
Critical storage requirements:
- Store in desiccated environment to prevent moisture absorption
- Protect from light by keeping vials in original packaging or amber containers
- Use freezers with continuous temperature monitoring and alarm systems
- Avoid repeated freeze-thaw cycles which can cause aggregation or degradation
- Document any temperature excursions and assess material suitability
Lot-specific storage recommendations are included in the COA and may vary based on peptide sequence.Lyophilized peptides should be stored at -20°C or colder in original sealed vials until ready for use. For long-term storage (>6 months), -80°C is recommended.
Critical storage requirements:
- Store in desiccated environment to prevent moisture absorption
- Protect from light by keeping vials in original packaging or amber containers
- Use freezers with continuous temperature monitoring and alarm systems
- Avoid repeated freeze-thaw cycles which can cause aggregation or degradation
- Document any temperature excursions and assess material suitability
Lot-specific storage recommendations are included in the COA and may vary based on peptide sequence.
When stored properly (lyophilized at -20°C), most peptides remain stable for 12-24 months from date of manufacture. Specific expiration or retest dates are provided on the COA for each lot.
Stability is influenced by peptide sequence—sequences containing methionine, tryptophan, or cysteine may be more prone to oxidation and have shorter shelf lives. Post-expiration, material should be retested or disposed of according to your laboratory’s quality protocols.
Regulatory Compliance & Use Restrictions
All products are intended strictly for in vitro research use only. They are designed for:
- In vitro laboratory experiments and assays
- Analytical method development and validation
- Chemical characterization and reference standard preparation
- Quality control testing and assay development
- Academic and institutional research not involving human or animal subjects
Products are NOT intended for: Human consumption, veterinary use, clinical applications, drug compounding, dietary supplements, cosmetics, therapeutic purposes, in vivo research, or any application involving living organisms.
No. Our products have NOT been evaluated or approved by the FDA for any purpose. They are research chemicals and laboratory reagents—not drugs, medications, dietary supplements, food additives, cosmetics, or medical devices.
Products are not intended to diagnose, treat, cure, or prevent any disease.
True Peptides is a chemical supplier providing research-grade material reference. WE DO NOT:
- A compounding pharmacy or chemical compounding facility as defined under Section 503A of the Federal Food, Drug, and Cosmetic Act
- An outsourcing facility as defined under Section 503B of the Federal Food, Drug, and Cosmetic Act
- A pharmaceutical manufacturer
- A medical provider or healthcare entity
- A dietary supplement manufacturer
Products may be purchased by qualified individuals and organizations conducting legitimate scientific investigation, including:
- Academic and research institutions (universities, research centers)
- Government research laboratories and agencies
- Private research organizations and CROs
- Biotechnology and pharmaceutical companies
- Individual researchers with appropriate facilities
- Analytical testing and quality control laboratories
Verification requirements: We use a risk-based verification approach. Standard orders require basic account information and acknowledgment of Terms of Service. Higher-risk orders may require enhanced verification including research purpose description, facility information, credentials, or institutional affiliation documentation.
The purchaser assumes full responsibility for compliance with all applicable federal, state, and local regulations governing the purchase, import, possession, and use of research chemicals.
Our responsibility is to provide high-quality, well-documented materials that meet our stated specifications. We do not provide guidance on applications outside the scope of laboratory research, and we do not assume liability for how materials are used after delivery.
No. Absolutely not.
We do not sell syringes, needles, or any injection supplies. We do not provide dosing guidance, administration protocols, injection instructions, or any information related to human or animal use. These questions fall outside the scope of in vitro research and we will not respond to them.
To be completely clear: Our products are lyophilized reference materials for in vitro laboratory research only. They are not drugs. They are not for injection. They are not for consumption. Any inquiry suggesting intended human use, self-administration, or therapeutic application is a direct violation of our Terms of Service.
Orders associated with such inquiries will be declined and refunded. Repeat violations may result in permanent account restrictions. We maintain detailed records of all customer communications.
If you are seeking medical treatment, peptide therapy, or pharmaceutical products, please consult a licensed healthcare provider or compounding pharmacy. We are a chemical supplier—not a pharmacy, not a medical provider, and not a source for self-medication supplies.
Technical Support
We provide technical support related to product specifications, storage, handling, and reconstitution. This includes assistance with solubility issues, interpretation of analytical data, and general laboratory best practices for reference materials.
We do NOT provide:
- Guidance on in vivo applications or clinical use
- Dosing recommendations for any purpose
- Advice on applications outside controlled laboratory research
- Medical, therapeutic, or diagnostic consultation
Yes. We offer custom analytical services on a project basis, including:
- Amino acid analysis (AAA) for peptide content quantification
- Advanced MS techniques (MS/MS, MALDI-TOF) for sequence confirmation
- Stability studies under specific storage conditions
- Solubility profiling in various solvents or buffer systems
- Reanalysis of existing lots for verification or troubleshooting
Contact [email protected] with your specific requirements. Pricing and turnaround time depend on scope and complexity.