Contact us via WhatsApp to get the latest prices +852 6460 6815
Contact us via WhatsApp to get the latest prices +852 6460 6815

FAQ

FREQUENTLY ASKED QUESTIONS (FAQ)

QUALITY & SOURCING

How to place an order?

Contact us via WhatsApp or email to get a quotation and place your order.

What is the purity of your peptides? Do you offer third-party testing?

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.

Is there a Minimum Order Quantity (MOQ)?

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.

Do you ship internationally? How long does delivery take?

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.

How can I apply for wholesale pricing or become a distributor?

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.

Do you offer custom peptide synthesis services?

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.

What payment methods do you accept?

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.

What is your return or delivery guarantee policy?

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

How quickly do orders ship?

See the Shipping and Payment page for more details.

RETURNS & REFUNDS

What is your return/refund policy?

See the Refunds and Return Policy page: Refunds and Return Policy

STORAGE & RECONSTITUTION

How should peptides be stored long-term?

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.

What is the best way to reconstitute peptides?

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.