what are the requirements to donate blood in california?
['Age. 18 years or older (16 and 17 year olds must have written parental consent).', 'Weight. Donors must be in good health and weigh a minimum of 110 pounds.', 'Donation Interval. Minimum of eight weeks between whole blood donations.', 'Blood Pressure. ... ', 'Heart Rate (pulse) ... ', 'Body Temperature. ... ', 'Blood Count. ... ', 'Drug Therapy.']