Earn when you shop online with your linked card at Lab Series. Only US-issued payment cards are eligible to enroll and earn. Online purchases made with a virtual card may not qualify for cashback rewards. Offer not valid for gift card purchases. Online offers are not valid for in store purchases and may not be combined with other Citi offers. Offer may be displayed on multiple websites but is redeemable only once per qualifying transaction. If you link to the same offer on more than one site, your qualifying transaction will only be eligible for rewards or benefits associated with the offer through the most recently linked site. Limit 1 redemption per offer link. A linked offer that has not been redeemed will automatically expire 75 days after it is linked or re-linked, or on the date the offer itself ends, whichever is sooner.
