Give blood between Jan. Each blood type has unique properties. Find yours on the chart to learn more! If you do not know your blood type, you can find out approximately three days after you donate with us, by calling Please choose maake donation type that matches up with your blood type in order to make a maximum impact in your community. Based on patient transfusion needs and the properties of your blood type, it is true that some donation types can make a bigger impact than. Read below to find out why. Please note that this information is what is generally needed by patients. Our inventory fluctuates every day based on patient needs, and we may occasionally ask donors to change their donation type to match our current needs. If you check the chart above, you will notice that each of these blood types can be received by patients with a variety of blood types. Since bllod only last for FIVE days, they are always needed by patients. We gladly accept whole blood donations from eligible d...