When we refund, when we replace, and how to claim.
Last updated: 28 July 2026 · v1.0
Peridyn Labs stands behind every lot we ship. If a shipment arrives damaged, or if we shipped the wrong item, we will replace or refund without conditions and without a restocking fee.
Because peptide reference standards are sensitive materials, we cannot accept opened-vial returns or returns based on change-of-mind after dispatch. Buyer's regret is not a refund category. Replacement covers damage in transit only — not storage conditions after delivery.
Email support@peridynlabs.com within 10 business days of delivery with your order number and a photograph of the affected item and its packaging. We respond within one business day.
Subscription cancellations are effective immediately and stop all future recurring charges. Shipments already dispatched at the time of cancellation are not refundable but you will not be charged again. There is no cancellation fee, no waiting period, and no phone call required.
We ask that you contact us before filing a chargeback — we resolve most disputes faster than the card network's chargeback timeline and without cost to either party. Improper chargebacks are contested. Repeated abuse of the chargeback process is grounds for account termination and, at the card network's discretion, MATCH-list placement.