Frequently asked.

Every lot is tested by reverse-phase HPLC and ESI mass spectrometry. Our release threshold is 98% purity by area-percent; average is >99%. The specific lot's CoA is published in our online CoA library.

Orders before 2pm EST ship the same business day. Most U.S. orders arrive in 2–3 business days. Tracking is included on every shipment.

Not yet. We currently ship within the United States only.

Lyophilized vials are stable at room temperature for transit. For long-term storage, refrigerate at 2–8°C or freeze at −20°C. Avoid repeated freeze-thaw cycles after reconstitution.

No. All products are sold strictly for research, laboratory, and educational purposes. They have not been approved by the FDA for human or veterinary use. By ordering, you confirm you are a qualified researcher acting in compliance with applicable laws. See our RUO Policy for details.

Every lot is independently tested by trusted third-party analytical labs for identity, purity, and endotoxin content before release. The full CoA is published in our online CoA library.

Free shipment protection is included with every order. Email support@helixcorebio.store with your order number and we will reship at no charge. Details on our Shipping and Returns pages.

Yes — for orders over $1,000 or custom synthesis work, email bulk@helixcorebio.store for a quote.

No. To keep our shipments discreet and reduce paper waste, we publish every lot's CoA in our online CoA library instead — accessible anytime, for every product we ship.

Outer packaging is plain and unmarked. The shipping label only lists "HelixCore Biotech" as the sender — no product names, sequences, or research material indication on the exterior.