Dr.Karl Landsteiner first identified the major human blood groups – A, B, AB and O in 1901.

Four main Red Blood Cell types: A, B, AB & O, each can be +ve or –ve for the Rh factor.

AB is universal recipient; O –ve is the universal donor of Red Blood Cells.

Blood is not something that is manufactured or factory made. It can only come from healthy human beings.

The entire process takes about one hour and 15 minutes; the actual donation of a pint of whole blood unit takes 8 to 10 minutes. However, the time varies slightly with each person depending on several factors including the donor’s health history and attendance at the blood drive. It’s about an hour of your time but It’s about a precious live.


If your Blood Type is...

Type You Can Give Blood To You Can Recieve Blood From
A+ A+ AB+ A+ A- O+ O-
O+ O+ A+ B+ AB+ O+ O-
B+ B+ AB+ B+ B- O+ O-
AB+ AB+ Everyone
A- A+ A- AB+ AB- A- O-
O- Everyone O-
B- B+ B- AB+ AB- B- O-
AB- AB+ AB- AB- A- B- O-

Blood Donation Facts

Only one pint of blood (350 to 450 ml) of blood is taken during a donation session, body makes new blood after donation.

An average healthy adult contains 10 pints of blood in the body. A new born baby contains one cup of blood.

Healthy adults who are at least 17 years old, and at least 110 pounds may donate about a pint of blood in every 2 months depending on Iron levels.

Blood makes up to about 7% of your body’s weight.

One unit of blood can be separated into several components: RBC, Plasma, Platelets and Cryoprecipitate.
      a) RBC live about 120 days in the circulatory system
      b) RBC carries oxygen to the body’s organs and tissues.
      c) Plasma is a pale yellow mixture of water, proteins & salts.
      d) Plasma, which is 90% water, makes up 55% of blood volume.
      e) Healthy bone marrow makes a constant supply of RBC, Plasma & platelets.

Thirteen tests (11 for infectious diseases) are performed on each unit of donated blood. This may give an idea to the donor about his health condition at free of cost.

After donating blood, you replace the fluid in hours and the RBC within 4 weeks. It takes 8 weeks to the restore of iron lost after donating.

The donor will be advised for more fluid intake and not to perform strong work for the rest of the day on which blood is donated. The person will be normally healthy from the next day.

Who cannot donate blood?

Pregnant women

HIV positive detected people and people those who are engaged in prostitution are strictly not recommended to donate blood.

Who can donate blood?

Asthmatic patients may donate if they do not have any symptoms at the time of donation.

12 months of deferral is seen among patients who have received serum, plasma or blood.

No restrictions are followed if you have extracted a tooth or undergone root canal treatment unless an infection occurs.

Chicken pox demands a 4 weeks deferral from the date of immunization.

Before a year of making tattoo.

Having cold symptoms and cured completely.

Having Measles or Mumps 3 weeks deferral since immunization is done.

No restriction for people without any symptoms after taking a complete course of antibiotics.

12 months deferral is needed from the date of detection of malaria and a visit to a malarial zone.

If blood pressure is under control due to medications then no deferral is needed.

Seven days deferral is mandatory in case a Hepatitis B vaccination is received.

Blood donation can be done only after 6 weeks following delivery.