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Quick Facts on Blood Donation

As we all know that blood donation or blood transfusion is very common nowadays and it is no longer a complicated process as medical science has progressed in this field .now its a hassle-free and safe to donate blood. Before donating blood or even thinking of it, one should know what is blood, what it contains and how it can be transfused from one person to another, and what precautions should be taken when donating or receiving blood. 

Blood is a specialised fluid consisting of cells, liquid, protein and other particles, courses through our bodies in a mind-boggling connection of arteries, veins and capillaries, supplying oxygen and other nutrients to every tissue in our body, and carrying away waste products.

  • A normal adult has about 5 - 6 litres of BLOOD in his/her body of which only 300 ml is used during BLOOD donation.
  • An individual, fit and between the ages of 18 and 60 years and over 50 Kgs. can donate BLOOD after three months and hence up to 4 times a year. Anyone till the age of 60, who is fit and healthy, can donate BLOOD
  • An individual can donate BLOOD if diabetes is controlled through diet. But if insulin is used to control diabetes the person cannot donate.
  • No rest, special diet or medicine is required after BLOOD donation.
  • The donor should not have taken any medicine in the last 2 days.
  • The donor should not have contacted jaundice in the previous three years.
  • The donor cannot contract AIDS or any other disease by donating BLOOD.
  • Avoid strenuous physical activity or heavy lifting for about 5 hours after donation.
  • Do not consume alcohol for 48 hours before donation.
  • One donation can save three persons.
  • More than 8% of the bodyweight of a healthy individual is comprised by BLOOD.
  • Human body is the only source of BLOOD.
  • When you donate one unit of BLOOD it equals 350 to 450 ml. However, consuming fluid after donation replenishes the volume of BLOOD within 24-48 hours.
  • If you are pregnant, lactating or have had abortion or if you have suffered from malaria or typhoid in the last one year or if you have had a surgery in the last six months then you should not donate BLOOD.
  • A donor after having given BLOOD voluntarily, gets a feeling of great pleasure, peace and bliss. Within a period of 24-48 hours, the same amount of BLOOD gets formed in the body, which helps the donor in many ways. His own body resistance improves, the circulation, and he himself feels healthier than before.
  • All types of BLOOD GROUP are needed. Common BLOOD types are needed because there are many +patients with them. Less common BLOOD types are needed because there are fewer donors to give them. Individuals with O- BLOOD GROUP are particularly in demand because they are the "universal donor". It means that people of all BLOOD types can receive O- BLOOD safely, so it is used during life-threatening emergencies or when the matching BLOOD type is in short supply. AB types are universal recipients. AB-type plasma can be transfused to all patients, while O- types are the universal plasma recipients. Therefore, all types are really needed!
  • In rare cases, if bleeding occurs after removing the bandage, apply pressure to the site and raise your arm for 5-10 minutes.
  • BLOOD GROUP AB+ is the universal recipient while group O- is the universal donor
  • The lifespan of an RBC is about 120 Days
Functions of blood in our body
Supply of Oxygen and nutrients- glucose, amino acids, fatty acids to tissues
Removal of carbon dioxide, urea and lactic acid from tissues
Coagulation of blood clotting
Transport of hormones
Maintaining body temperature
Regulating the body's ph
Immunological functions-fighting disease and foreign particles. 
Blood and its components
Plasma-more than half of the blood is liquid, containing dissolved salts, hormones, antibodies, fats,
Sugars, electrolytes, minerals, vitamins and proteins. Plasma by itself is yellow in colour.
Albumin-the major protein in the blood.
Immunoglobins or antibodies, and clotting proteins
Erythrocytes or red blood corpuscles-carry oxygen from lungs to other parts, and carbon dioxide
From tissues back to lungs contain haemoglobin.
Thrombocytes or platelets-promoting clotting.  They gather at a bleeding site, clump together and seal the broken blood vessel with the help of a glue-like protein, von Willebrand factor also release clotting agents.
Leucocytes or white blood cells-part of bodies immune system.
  • ANAEMIA - the number of RBC’s or the amount of haemoglobin is below normal be caused by excessive bleeding, increased RBC, destruction  (haemolysis) or decreased RBC production or deficiency of iron and vitamin B.
  • SICKLE CELL DISEASE-a genetic disease where the RBC’s shaped like sickles. The cells contain an abnormal form of haemoglobin which carries less oxygen, causing loss of shape. Incurable.
  • HAEMOPHILIA - deficiency of a blood clotting factor leading to uncontrolled bleeding.Genetic disorder.
  • THROMBOCYTOPENIA - low platelet concentration in the blood; affects clotting.