? Kunnamkulam.info | Blood Bank | Blood Donation FAQ
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FAQ on Blood Donation
There is no other redeeming act than to save a human life. People may feel afraid or selfish when it comes to donating blood. People who have never donated blood may themselves require blood at some point of their life. But think what will happen if every body feels unwilling to donate blood. There will be no blood available in the blood banks. So many precious lives will be wasted. It may happen to anyone, even you. So don't be afraid or selfish about donating blood. Blood is the fuel of life. If human lives are wasted because of the dearth of blood in the blood banks it will be a shame to the human society. So donate blood and encourage other people as well.
Why donate blood?
There is tremendous demand for blood in hospitals. Many patients die because they are not able to cope with the loss of blood.
Blood you donate is used to:
  • Replace blood lost during injury as in accidents.
  • Replace blood loss during major surgeries
  • Help patients with blood disorders like haemophilia, Von Willebrand’s disease survive.
  • Help burns patients receive plasma, that may be critical for their survival.
  • Raise haemoglobin levels ( through transfusions) in patients with chronic ailments like kidney diseases, cancer and anaemia.
Blood donation hardly makes a difference in terms of health to the donor, but it can help save the life of a patient.
Who can donate blood?
Some basic health conditions have to be met by donors:
A donor should :
  • Be above 18 years and below 60 years of age.
  • Have a haemoglobin count that is not less than 12.5 g/dl
  • Weigh not less than 45 kgs
  • Have normal body temperature at the time of donation
  • Have normal BP at the time of donation
  • Should be free of any disease at the time of donation
Who should not donate blood?
The following categories of people should avoid giving blood:
  • Pregnant or lactating women, or those who have recently had an abortion.
  • Persons who are on steroids, hormonal supplements or certain specified medication
  • Persons with multiple sexual partners or those who are addicted to drugs
  • Persons who have had an attack of infection like jaundice, rubella, typhoid or malaria.
  • Persons who have undergone surgery in the previous six months.
  • Persons who have consumed alcohol in the 24 hours prior to donation
  • Women should avoid donation during their menstruating period.
  • Those who have undergone various vaccinations should avoid donation for the corresponding period specified below:

    Type of Vaccine The period in which donation should be avoided.
    Hepatitis B 6 months
    Live vaccines 2 weeks
    Killed vaccines 48 Hours
    Rabies 1 year

  • Persons with any systemic disease like heart disease, kidney disease, liver problems, blood disorders or asthma should NOT donate blood.
  • Persons suffering from infections transmitted through transfusions like HIV, Hepatitis, Syphilis etc should Not donate blood.
How much blood is taken at the time of donation? How soon does the body make good this loss?
Only 350 ml of blood is taken at the time of donation. An average person has 5-6 litres of blood in the body.
In terms of volume the loss is corrected in 24-48 hours by the body. The red cell count is corrected in about 56 days.
How long does the process of donation take?
The actual bleeding time is about 5-6 minutes. There will be a medical check up before this and you will be advised some rest ( for 5-10 minutes) and given some refreshment after donation. The whole process takes about 30 minutes. 
How often can one donate blood?
The minimum time advised between two donations is 3 months. This gap helps blood regain the normal haemoglobin count.
Are there any hazards in blood donation? What are the precautions that need to be taken?
Your health will not suffer because of the blood you have donated. In fact, the bone marrow is stimulated to produce new cells.
However if conditions are not hygienic, you may be exposed to infection.
Precaution: Be sure that disposable needles are used for bleeding.
What happens to the blood that is donated?
The blood is screened for the following diseases/infections:
  • HIV
  • Hepatitis B & C
  • Syphilis
  • Malaria
The blood is grouped and stored either as whole blood or as components like Packed red blood cells, plasma or platelets. This is then sent on demand to hospitals.
How is Blood Grouped?
Blood is composed of cells suspended in a liquid.
The liquid portion is the plasma, from which therapeutic fractions and derivatives are made.
Suspended in the plasma are three types of cells:
Red cells: These carry Oxygen
White cells: These fight infection
Platelets: These stop wounds bleeding
The most common type of grouping is the ABO grouping. Red Blood Cells have a protein coat on their surface which distinguishes them. According to this blood is divided into four groups:
A (A protein is present), B (B protein is present),AB (AB protein is present)and O ( No protein is present).
There are subtypes under this grouping ( listed as A1, A2, A1B or A2B? some of which are quite rare.
Apart from this there is another protein which plays an important part in the grouping of blood. This is called the Rh factor. If this is present, the particular blood type is called positive. If it is absent, it is called negative. Thus we have the following broad categories:
A1 Negative
A1 Positive
A1B Negative
A1B Positive
A2 Negative
A2 Positive
A2B Negative
A2B Positive
B Negative
B Positive
O Negative
O Positive
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