The summer months are a challenge for the American Red Cross as the organization is recording low levels of blood donations.
The Red Cross is in need of platelet donors in addition to donors with blood types O-negative, B-negative and A-negative.
"Many donors are still enjoying summer activities, but patients are unable to take a vacation from needing lifesaving infusions," Northern California Blood Services Region CEO Jeff Meyer said.
The organization issued an emergency call for donations in June when they were less than 50,000 blood and platelet donors.
Since then, donations have increased 15 percent however more blood products are being distributed to hospitals than received.
Northern California Blood Services needs approximately 300 donors each day.
Interested donors must be at least 17 years old, weigh at least 110 pounds and be in good health. Appointments can be arranged by calling 800-733-2767. They must provide a blood donor card or driver's license and two other forms of identification upon check-in.