FAQ
FREQUENTLY ASKED QUESTIONS (FAQ)
QUALITY & SOURCING
Contact us via WhatsApp or email to get a quotation and place your order.
We guarantee all our peptides have a purity of over 99%. Every batch undergoes rigorous testing in our laboratory via High-Performance Liquid Chromatography (HPLC) and Mass Spectrometry (MS). We provide full Certificate of Analysis (CoA) and third-party test reports to ensure complete transparency and research safety.
For individual researchers (B2C): The minimum order is 1 unit.
For wholesalers (B2B): We offer bulk purchasing discounts for commercial laboratories and distributors. Please contact us to request our price list.
Yes, we ship worldwide from our Hong Kong fulfillment center. Most orders are processed and dispatched within 3 business days. International delivery normally takes around 10 business days, depending on your location and local customs clearance.
We welcome partnerships with commercial entities globally. Simply provide your estimated monthly order volume, and we will create a customized pricing plan based on your requirements.
Absolutely. As a direct manufacturer, our fully equipped R&D laboratory supports custom peptide synthesis. We can accommodate specific sequence requirements, modification requests and large-scale commercial synthesis. Please contact us with your specific peptide sequence and required purity for a quotation.
For individual retail orders, we support various third-party payment options including PayPal and Western Union. For B2B wholesale orders, we also accept secure Bank Wire Transfer (T/T) and selected cryptocurrencies to facilitate large international transactions.
Due to the special nature of research compounds, returns cannot be accepted once products leave our warehouse. However, we offer a 100% delivery guarantee. If your order is lost in transit or seized by customs, we will provide one free reshipment to keep your research uninterrupted.
ORDERING & SHIPPING
See the Shipping and Payment page for more details.
RETURNS & REFUNDS
See the Refunds and Return Policy page: Refunds and Return Policy
STORAGE & RECONSTITUTION
For long-term storage, lyophilized vials should be stored at 32°F in a non-frost-free freezer, protected from light and moisture. Properly stored, peptides remain stable for 3–5 years.
Reconstituted peptides should be stored at 32°F in a non-frost-free freezer, protected from light and moisture. Properly stored, Reconstituted peptides remain stable for 30-60 days.
Most researchers reconstitute with bacteriostatic water or sterile acetic acid (for certain sequences).
Important Notice: Research Use Only
All products supplied by NATIONALSCIENCE LABS, LLC are strictly intended for laboratory research purposes only. Our peptides are not designed for human use, and we ensure full compliance with applicable regulations.