Thai Red Cross Society confirmed “It’s not true” if it was shared in the online media that The blood of donors who have been vaccinated against COVID-19 is black and cannot be used to treat patients.
Today (December 1, 2064) reporters reported that In the event that it is shared on social media The crisis began with a blood shortage. But because the blood of donors who have been vaccinated with COVID-19 is black, it cannot be used to treat patients. causing misunderstandings and concerns for blood donors and the public Affects hospitals that require blood to treat patients very much.
Assoc. Prof. Dr. Dujai Chaiwanichsiri, Director of the National Blood Center, the Thai Red Cross Society, clarified that the information in such social media “Not true”
People who have been vaccinated against COVID-19 will be injected into the muscles and the body will change into immunity The same is true for other vaccinations, such as the flu vaccine. which does not cause the color of the blood to be dark and there is no change in color
This is because blood is a “red” fluid that circulates within the blood vessels throughout the body. by hemoglobin It serves to carry oxygen from the lungs to different parts of the body and carbon dioxide from different parts of the body. of the body to be excreted in the lungs This causes the red blood cells in the arteries to have high levels of oxygen. The blood was bright red.
The red blood cells in the veins have reduced oxygen content. and has a higher carbon dioxide content Blood is dark red. when donating blood each time The staff will collect blood from the crook of the arm in the vein. causing the donated blood to have a darker red color than the veins from the arteries everyone is normal
Therefore, blood donors who have been vaccinated against COVID-19 Does not make the blood dark and is not harmful to blood recipients
In the event that it is stated Those who have not been vaccinated with COVID-19 have good blood. “It’s disinformation” Because whether those who have received or have not been vaccinated against COVID-19 It does not determine whether a person’s blood is good or bad.
The reason is because in every blood donation Blood donors must self-screen their health from questionnaires. and medical personnel will screen for various risks that can be transmitted by blood to the patient Then, every unit of blood will be sent for blood quality screening according to the standards in the laboratory. before paying to the hospital to use for further treatment of patients
Can donate blood before and after vaccination against coronavirus
National Blood Center There are guidelines for the COVID-19 vaccine. before vaccination can donate blood before vaccination If there is no weakness Vaccination can be given the next day. Blood should not be donated on the same day of vaccination.
after vaccination Can donate blood by leaving 7 days after vaccination. In case of side effects after vaccination Get well first, except for 7-14 days depending on the severity of the symptoms.
However, donating blood does not reduce the immunity received from the COVID-19 vaccination due to white blood cells. which is a cell that produces immunity with a small number of donated blood compared to the total amount in the body It is also created from bone marrow to quickly replace it to the normal level in the bloodstream.
In addition, the COVID-19 vaccine No effect on immunity in patients receiving blood. Due to the low amount of immunity in the blood received compared to the total blood volume in the patient’s body
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