Frequently Asked Questions
Find answers to the most common questions about our research peptides, ordering process, shipping, and product quality.
Ordering & Shipping
How do I place an order?
Browse our catalog, select your desired product and quantity, then click Secure Checkout to complete your purchase via our secure payment processor.
What payment methods do you accept?
We accept major credit cards (Visa, Mastercard, American Express, Discover) through our secure payment processor, as well as Zelle and Venmo for direct payments.
How fast do you ship?
Orders placed before 2:00 PM EST Monday–Friday ship same day. Standard delivery is 2–3 business days via USPS Priority Mail.
Do you offer free shipping?
Yes! All orders over $200 qualify for free standard shipping. Orders under $200 ship for a flat rate of $9.99.
Do you ship internationally?
Currently we ship within the United States only.
Can I track my order?
Yes, tracking information is sent via email once your order ships.
Product Quality
What purity are your peptides?
All peptides are 99%+ purity, verified by independent HPLC and Mass Spectrometry analysis.
Do you provide Certificates of Analysis?
Yes, every product includes a Certificate of Analysis (COA) from U.S. Elite Testing.
Are your peptides tested by third parties?
Yes, all products undergo independent third-party analysis to verify purity and identity.
What does "Research Use Only" mean?
Our products are sold strictly for laboratory and scientific research purposes. They are not intended for human or animal consumption.
Storage & Handling
How should I store my peptides?
Store lyophilized peptides at −20°C for long-term storage. Once reconstituted, store at 2–8°C and use within 30 days.
What is the shelf life of your peptides?
Lyophilized peptides stored at −20°C typically maintain stability for 24+ months.
How do I reconstitute peptides?
Use bacteriostatic water or sterile water. Add solvent slowly down the vial wall. Do not shake — gently swirl until dissolved.
Returns & Support
What is your return policy?
We offer a 30-day quality guarantee. If a product arrives damaged, doesn’t meet purity specifications, or is incorrect, we will replace it or issue a full refund. See our Returns & Quality Guarantee page for full details.
How do I contact customer support?
Email us at admin@pureuspeptide.com. We respond within 24 hours on business days.
What if I receive a damaged product?
Contact us immediately with photos. We will replace any products damaged during shipping at no charge.
Still have questions?
Our support team is available to help with any additional questions about our research peptides.
Contact Support