HomeDiseaseCOVID-19Blood donation: who can donate and when it is not indicated

Blood donation: who can donate and when it is not indicated

Blood donation is a safe procedure and can be done by people who weigh more than 50 kg or BMI greater than 18.5 kg/mtwo, have no changes in the blood count and are 16 years old or older. Men can donate every 3 months while women must wait 4 months between each donation due to blood loss due to menstrual periods.

Some situations can temporarily prevent blood donation, such as tattooing or piercing, international travel, SARS-CoV-2 infection, tooth extraction, flu or cold, for example.

On the other hand, having hepatitis B or C or being a carrier of the HIV virus permanently prevents the donation of blood, since they are diseases that can be transmitted by blood, with the possible infection of the person who receives it.

who can donate blood

Blood donation can be done by healthy people, from 16 years old, as long as it is authorized in writing by the parents or guardians. In addition, some requirements for blood donation are:

  • Weigh more than 50 kg and BMI greater than 18.5;
  • No changes in the blood count, such as a decrease in the amount of red blood cells and/or hemoglobin;
  • Have a healthy and balanced diet before the donation, avoiding the consumption of fatty foods at least 4 hours before the donation;
  • Not having drunk alcohol 12 hours before the donation and not having smoked in the 2 hours before;
  • Be healthy and not have blood-borne diseases like Hepatitis, AIDS, Malaria or Zika, for example.

Donating blood is a safe process that ensures the donor’s well-being and is a quick process that takes a maximum of 30 minutes. Donor blood can be used in different ways, depending on the needs of the recipient, and whole blood or any of its components such as plasma, platelets, leukocytes or red blood cells can be used, depending on the needs of those who need it.

what is universal giver

The universal donor corresponds to the person who has type O blood, who has anti-A and anti-B proteins and, thus, when it is transfused to another person, it does not cause a reaction in the recipient, and, therefore, can donate to all people.

It is important that the blood is compatible between donor and recipient, as this way it is possible to avoid transfusion reactions. See who can donate to whom.

What prevents blood donation

Some situations can temporarily prevent blood donation, which are indicated in the table below:

Situation that prevents donation Time when you can’t donate blood
New coronavirus infection (COVID-19) 30 days after laboratory confirmation of cure
consumption of alcoholic beverages 12 hours
Common cold, flu, diarrhea, fever or vomiting 7 days after symptoms disappear
teeth extraction 7 days
Normal birth 3 to 6 months
Cesarean delivery 6 months
Endoscopy, colonoscopy or rhinoscopy exams Between 4 to 6 months, depending on the exam
Pregnancy Throughout the gestation period
Abortion 6 months
Breast-feeding 12 months after delivery
Tattooing, placement of some piercing or performing any acupuncture or mesotherapy treatment Four months
Vaccines 1 month
Risk situations for sexually transmitted infections, such as multiple sexual partners, or injecting drug use 12 months
Pulmonary Tuberculosis 5 years

change of sexual partner

6 months
Trips abroad It varies between 1 and 12 months, depending on the country to which you traveled.
Weight loss for health reasons or for unknown reasons 3 months
Cold sores, genital or ocular As long as you have symptoms

Situations that permanently prevent donation

There are also some situations that prevent blood donation permanently due to the risk for the donor and the recipient, the main ones being:

  • HIV or AIDS virus infection;
  • Hepatitis B or C;
  • HTLV, which is a virus in the same family as the HIV virus;
  • Diseases treated with lifelong blood products;
  • Blood cancer such as lymphoma, Hodgkin’s disease or leukemia, for example;
  • Chagas disease;
  • Malaria;
  • I use injecting drugs.

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