Every compound we ship is guaranteed at 99%+ purity. Each batch goes through independent third-party testing using HPLC and Mass Spectrometry before it ever leaves our facility. The results — including exact purity percentage, molecular weight confirmation, and sequence verification — are documented in a batch-specific Certificate of Analysis available directly on each product page.

A COA is an official document issued by an independent accredited laboratory confirming the quality of a specific production batch. The key sections to look at are purity (should read 99%+), molecular identity (confirmed via mass spectrometry), appearance, and endotoxin levels (should be below 1 EU/mg). Every COA at Apex Lab is batch-specific — match the batch number printed on your vial to the corresponding COA on the product page to verify your exact order.

Yes, always. We do not rely solely on manufacturer-provided data. Every batch is sent to accredited U.S. third-party laboratories for verification. If any product fails independent testing, we will refund your order in full including shipping — no questions asked.

Absolutely. Any licensed HPLC testing facility can verify your compound independently. We encourage it — it’s what serious research environments do and we have nothing to hide.

Peptides are short chains of amino acids — the same building blocks that form proteins. In a research context, synthetic peptides are used to study molecular pathways, protein interactions, and biological mechanisms. They are fundamental tools in biochemistry, pharmacology, and molecular biology research.

All RRK Labs compounds ship in lyophilized (freeze-dried) powder form in sealed glass vials. This format provides maximum stability during transit and storage without requiring cold chain shipping.

Orders placed before 2:00 PM EST ship the same business day. We offer 2-day shipping so your compounds arrive quickly and in optimal condition. Every order includes a tracking number sent to your email upon dispatch.

Shipping is free on all orders over $150. Below that threshold, standard shipping rates apply at checkout.

Contact us immediately at our support email with your order number and corrected address. If your order hasn’t shipped yet, we will update it. Once dispatched, address changes are unfortunately not possible.

We accept multiple payment methods available at checkout. All transactions are processed through secure, encrypted payment systems.

Reach out to our support team directly for information on larger orders placed for legitimate research purposes.

• Order not yet shipped : full refund available upon request
• Order shipped or delivered : no refund due to the sensitive nature of research materials, which cannot be restocked once they leave our facility
• Damaged item : contact us with a photo and a video and we will ship a replacement immediately at no cost

Research materials cannot be restocked or resold once they leave our facility. This policy exists to protect the integrity of every order we ship — yours included.

Yes. Under the Federal Food, Drug, and Cosmetic Act, a compound is only classified as a drug if it is intended for human or animal use. Our compounds are labeled “For Research Use Only” in compliance with 21 CFR §809.10(c) and are therefore not subject to FDA drug regulation when sold and used strictly for research purposes. It is your responsibility to verify compliance with all applicable local and regional laws.

It means our compounds are intended exclusively for laboratory research, scientific investigation, and educational purposes. They are not approved for human consumption, veterinary use, or any therapeutic or diagnostic application. By purchasing from RRK Labs, you confirm you are a qualified researcher and accept full responsibility for the safe handling, storage, and use of these materials.

Because we operate strictly as a research supply company and take our legal compliance seriously. Every disclaimer exists to be transparent with our customers and to ensure our compounds are used appropriately. We don’t hide behind fine print — we put everything upfront.