Frequently Asked Questions

All Pepta Labs peptides are manufactured to a minimum of ≥99% HPLC purity. Every batch is independently tested by a third-party laboratory using high-performance liquid chromatography (HPLC) and electrospray mass spectrometry (MS) for molecular weight confirmation. Typical purity results range from 99.1% to 99.6%.

Yes — every single batch. We do not rely on internal-only testing. Each lot is sent to an independent analytical laboratory for HPLC purity testing and mass spectrometry verification. The resulting Certificate of Analysis (COA) is available upon request and can be requested via support@peptalabs.com.

Every product page has a dedicated "Certificate of Analysis" tab with a request option for the current batch COA. Each COA includes the batch number, HPLC purity percentage, molecular weight confirmation via MS, and the date of analysis. Email support@peptalabs.com to request.

Lyophilized (freeze-dried) compounds should be stored at -20°C for long-term storage. Short-term storage at 2–8°C (standard refrigerator) is acceptable for several weeks. Keep vials sealed and protected from light and moisture. Avoid repeated freeze-thaw cycles.

We now accept credit and debit cards (Visa, Mastercard, Amex, Discover) directly at checkout — use code CARD20 for 20% off your first card order. We also accept Cash App, Venmo, Zelle, Bitcoin, Ethereum (5% crypto discount), and eCheck. Include your reservation number in the payment memo for non-card methods.

No. There is no minimum order amount. You can order a single vial. Free shipping is included on all US orders regardless of size.

Yes. Most products offer 3-vial and 5-vial packs with per-unit savings of up to 25%. We also offer curated research bundles that pair complementary peptides at additional discounts. Volume pricing is shown on each product page.

Yes. Current codes include SWITCH15 (15% off for new customers switching vendors), LAUNCH20 (20% off launch special), and WELCOME10 (10% off first order via email signup). We also run BOGO promotions periodically. Only one code can be applied per order.

Orders placed before 2 PM EST are processed and shipped the same business day. Standard shipping is free on all US orders and typically arrives within 2–5 business days. Expedited options are available at checkout.

We currently ship to US addresses only. International orders cannot be processed at this time. Sign up for our mailing list to be notified when international shipping becomes available.

No. All Pepta Labs products are sold strictly for in-vitro laboratory research purposes only. They are not approved by the FDA for human or animal consumption, medical treatment, or diagnostic use. By purchasing, you confirm you are 21+ and acknowledge these products are for research use only.

All research information on our product pages is sourced from published peer-reviewed literature. Each study citation includes the title, journal name, authors, and a PubMed ID (PMID) link for direct verification. These findings are provided for informational purposes only and do not represent claims about our products.

Yes. Pepta Labs carries many of the same research compounds previously available from Peptide Sciences, with some key improvements: every batch is independently verified by a third-party lab (not internal-only), COAs are publicly available upon request via support@peptalabs.com, and we offer multi-vial discounts and bundle pricing. New customers can use code SWITCH15 for 15% off. See our full switching guide for details.

Research bundles combine two or more peptides at a discounted price. They're curated based on common research protocols. Individual products are sold as single-compound vials with optional multi-vial pack sizing (1, 3, or 5 vials). Both bundles and individual products include the same third-party tested COAs and free shipping.