What is the shelf-life of my QIAGEN Kit?
FAQ ID -651

Most QIAGEN kits have information on the shelf-life (the time range for guaranteed kit performance) printed in the "Storage Conditions" section of the respective handbook. It is measured from the time a kit is received by the customer. Some QIAGEN kits possess a specific expiration date printed on the kit label, or inside the lid of the kit box.