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【Blood Donation】Definition, types, and requirements

2015-June-5       Source: Newsgd.com

Blood donation is voluntary. Blood donors donate whole blood, plasma or blood components and do not receive any compensation for their contribution (but in some cases there are souvenirs).

1. Definition of Blood Donation

(1) Blood donation is voluntary. Blood donors donate whole blood, plasma or blood components and do not receive any compensation for their contribution (but in some cases there are souvenirs).

(2) The blood is usually stored in a blood bank, medical units or in the Red Cross Society's custody for those who need transfusions. This ensures blood quality can be guaranteed and is conducive to the health and safety of the recipient.(3) The average person may donate blood at blood donation centers that are fixed in various regions. Many blood donation centers regularly conduct blood donation drives at schools, public areas and events to solicit blood donors to meet district activities.

2. Types of Blood and Blood Donation

(1) Blood Types

Your blood type is determined by the presence of specific molecules or antigens found on the surface of red blood cells. There are four main blood types: O, A, B and AB. Your blood also carries an Rh factor that is positive or negative.

Together, that gives us 8 possible blood variations: O-, O+, A-, A+, B-, B+, AB- and AB+. The ABO Blood Group System There are four major blood groups determined by the presence or absence of two antigens-A and B-on the surface of red blood cells: ※Group A---has only the A antigen on red cells (and B antibody in the plasma) ※Group B---has only the B antigen on red cells (and A antibody in the plasma) ※Group AB---has both A and B antigens on red cells (but neither A nor B antibody in the plasma) ※Group O---has neither A nor B antigens on red cells (but both A and B antibody are in the plasma) There are very specific ways in which blood types must be matched for a safe transfusion.

(2) Blood Donation Types

  • Whole Blood: This is the most common type of blood donation, during which approximately a pint of whole blood is donated. The blood is then separated into its components — red cells, plasma, platelets.
  • Platelets: This type of donation uses a process called apheresis. During apheresis, the donor is hooked up to a machine that collects the platelets and some of the plasma, and then returns the rest of the blood to the donor.
  • Plasma: Plasma may be collected simultaneously with a platelet donation, or it may be collected without collecting platelets during an apheresis donation.
  • Double Red Cells: Double red cell donation is also done using apheresis. In this case, only the red cells are collected.

3. Basic Requirements for Donators

(1) Donators must be at least 18 years old and no older then 55 years old.

(2) Males must weigh over 50 Kg and females must weigh at least 45 Kg.

(3) Donators should be healthy.

If donators had previously suffered from Hepatitis, syphilis, gonorrhea, HIV/AIDS, Heart Diseases, or tuberculosis, they are unable to donate blood.

If donators had participated in any homosexual activities, drug abuse, or had been with multi sexual partners, they are also ineligible to donate blood.

* Donating Blood express your kindness and concern for others. It also shows that you are healthy.

 

 

 

Editor: Yishan

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