Are you a Weekend Warrior? You can save more lives by donating Platelets on weekends! Hospitals tend to schedule surgeries or treatments requiring Platelets on Mondays and Tuesdays. Since Platelets only have a shelf life of five days, Platelets that are donated on Saturdays and Sundays are used early in the week. Our Platelet Weekend Warrior Club rewards donors who make the commitment to donate Platelets at least 12 weekends throughout the calendar year with an exclusive, embroidered polo shirt. Start being a Weekend Warrior today.