Refund & Return Policy

Last updated: October 22, 2026

We want every order to arrive exactly as expected. This policy explains what we do if something goes wrong. All products are sold for laboratory research use only.

Damaged, defective, or incorrect items

If an item arrives damaged, defective, or different from what you ordered, contact us within 7 days of delivery with your order number and a photo of the item and packaging. We will send a replacement or issue a full refund for that item, including any related shipping charge. In most cases you will not need to send the item back.

Unopened items (30-day returns)

• Unopened, sealed, and undamaged vials may be returned within 30 days of delivery for a refund of the item price.
• Contact us first to request a return; we will reply with return instructions. Returns sent without contacting us cannot be guaranteed a refund.
• Return shipping is paid by the customer unless the return is due to our error. Original shipping charges are not refundable.

Items we cannot accept back

To protect the integrity of our products, we cannot accept returns of vials that have been opened, reconstituted, unsealed, or stored improperly, except where the item was defective or incorrect when it arrived.

Order cancellations

You may cancel an order for a full refund at any time before it ships. Once an order has shipped, the return terms above apply.

Lost or delayed packages

Every order ships with tracking. If tracking shows no movement for 7 business days, or your package is marked delivered but you have not received it, contact us and we will work with the carrier to locate it. If a package is confirmed lost in transit, we will reship the order or issue a refund.

How refunds are issued

• Approved refunds are returned to the original payment method, usually within 5–10 business days after approval (or after we receive a returned item).
• Discounts and coupon values are not refundable as cash.

Contact us

For any order problem, please reach out using the email address or phone number listed at the bottom of this page. Include your order number (for example, DLP-1234) so we can help quickly. Contacting us first is the fastest way to resolve an issue.