Bloodmobile parked in Parking Lot #4 5151 State University Dr Los Angeles, CA 90032 Make an appointment for a faster check-in process, download the Blood Donor app and make an appointment to see where your blood goes! Active Chair: Jonathon Rosa You must wait 56 days in between blood donations, please don't sign up if the proper amount of time hasn't passed. Please check American Red Cross website for more restrictions! https://www.redcrossblood.org/donate-blood/how-to-donate/eligibility-requirements.html