Myths and Facts About Giving Blood

Giving blood is one of the most generous acts one human being can do for another. Through this crucial liquid it is possible to improve and even save lives. However, lack of information has propagated several myths that are far removed from reality. Here are some myths about giving blood:

Myth: Blood donations are only needed during disasters or wars.

Reality: Blood is needed every day to care for the injured and sick, not just during disasters and wars. Normal blood donations are safer than blood donated for replacement or during an emergency.

Myth: Diabetics or those with heart disease cannot donate.

Fact: Yes, they can, as long as their levels are controlled and they are not taking medications or insulin.

Myth: People with tattoos or piercings cannot donate.

Reality: Yes, they can, as long as a year has passed since they had the tattoo or piercing done.

Myth: You have to fast before donating blood.

Fact: It is only recommended that you do not eat two hours prior to donating.

Myth: It’s painful.

Fact: Pain thresholds vary from person to person. The instruments used for extracting blood are designed to inflict as little pain as possible.

Myth: Donating blood makes you fat or thin.

Fact: False. During a donation, between 400 and 450 ml of blood is taken from the donor, which does not cause any change in weight.

Myth: Giving blood makes you weak.

Fact: False. Donors will feel tired, but all that is needed is a little rest and to avoid activities that require a lot of strength. After 24 hours, the body recovers the volume of liquid lost.

Myth: After surgery, you cannot donate.

Fact: You certainly cannot donate right away, you have to wait six months.

Myth: Those who have had hepatitis cannot donate.

Fact: Those who had hepatitis A before the age of 10 can donate, but those who have had Hepatitis B or C definitely cannot.

Myth: Blood is transfused directly from patient to patient.

Fact: False. Donations are analyzed, broken down according to their elements and quality is assured. The blood is then used as needed: for cases of anemia, leukemia, hemophilia and hemorrhages, among others.


For more information, contact us at the Blood Bank.

Observatorio: 5230-8000 ext. 8920, 8921 and 8922

Santa Fe: 1103-1600 ext. 1830, 1621 and 1432

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