Donating blood does not harm your health
From the perspective of blood physiology: What is the concept of donating 200 ml of blood? The total blood volume in the human body accounts for about 8% of the body weight. The total blood volume of an average adult is 4000-5000 ml, and a blood donation of 200 ml only accounts for 1/20-1/25 of the total blood volume; in clinical medical practice, Generally, blood transfusion is not recommended for those whose blood loss is less than 600 ml. It can be seen that donating 200 ml of blood will not affect health.
Not all blood in the human body participates in blood circulation. 20-25% of blood is stored in "blood reservoirs" such as the spleen, liver, lungs, and skin. The spleen is the largest "blood reservoir" in the human body. ”, which can store 20% of the human body’s total blood volume. When the human body needs blood for blood circulation, the spleen, etc. will continuously release blood into the blood vessels to participate in blood circulation. Donating 200 ml of blood does not affect blood circulation, so how can it affect health? The human body's blood components are very active in expelling the old and incorporating new ones. About 1/120 of the red blood cells (i.e. 2 billion red blood cells) in the human body age and die every day. The average lifespan of white blood cells is about 7-14 days, and the lifespan of platelets is even shorter, about 7-14 days. 9 days. Furthermore, human bone marrow has a strong compensatory function. Under certain conditions, the hematopoietic function of bone marrow can increase to 6-8 times normal. A healthy person produces about 200 billion red blood cells and 120 billion platelets every day, that is, each The number of new blood cells produced each year by a healthy adult is equivalent to the total number of blood cells in the human body. After donating 200 ml of blood, the human body will be replenished quickly and will never affect health.
What rewards should voluntary blood donors receive?
1. Voluntary blood donors will be issued a voluntary blood donation certificate and awarded a voluntary blood donation commemorative medal.
⒉ Those whose voluntary blood donation reaches 1 liter, 1.6 liters and 2.0 liters will be awarded a voluntary blood donation bronze, silver and gold medal respectively, and those whose voluntary blood donation reaches 3.4 liters will be awarded a voluntary blood donation trophy.
⒊Unpaid blood donors and their immediate family members who do not enjoy public medical care and labor insurance medical treatment (those who do not meet the blood donation conditions) need blood due to injuries or illnesses, and the blood donor will provide the blood with the unpaid blood card. The same amount of blood or blood components as the person’s voluntary blood donation. Bring the invoice from the blood donor unit (hospital) to the blood collection unit (blood station) for reimbursement.
What rights do blood donors have that should be protected?
⒈All voluntary blood donors have the right to be commended and rewarded.
⒉The personality of blood donors will not be insulted and they have the right to protect personal privacy.
⒊Blood donors can enjoy free physical examinations and laboratory tests when donating blood.
How much blood can a healthy citizen donate in his lifetime?
According to the "Blood Donation Law of the People's Republic of China", the blood donation age is 18-55 years old, the interval between two blood donations is more than six months, and the amount of blood donated each time is 200-400 ml. If a healthy person who meets the blood donation standards donates blood once every six months, with 400 ml of blood donated each time, then a person can donate blood 74 times in his lifetime, with a cumulative donation volume of 30,000 ml.
Comparison of blood donation in Asian countries
The provisions of the above-mentioned items in my country's "Blood Donation Law" are lower (or looser) than those in developed countries and even in Asia.
Blood donation age: my country stipulates 18-55 years old (male and female); Hong Kong SAR stipulates 16 years old and above, only a lower age limit, but no upper age limit; Japan stipulates 18-69 years old; South Korea stipulates 16-65 years old Age limit: 17-65 years old in Taiwan.
One-time blood donation volume: my country stipulates that one blood donation is 200 ml, with a maximum of 400 ml; South Korea is 320-400 ml; Hong Kong SAR is 300-430 ml; Taiwan is 250-500 ml; Nepal is 250-500ml.
The interval between two blood donations: my country stipulates that it should not be less than six months; while Japan, South Korea, Hong Kong SAR, and Taiwan are all three months. It has been reported abroad that a blood donor donated blood 10 times in a year, which shows that blood donation does not harm health.
There are many benefits to donating blood
A large number of scientific studies have proven that donating blood is beneficial to health.
It can prevent and relieve hyperviscosity
Scientists used hemorrheology and hemodynamics to study the relationship between blood and blood donation, and found that insisting on long-term and appropriate blood donation, especially It is a form of red blood cells and platelets that can significantly reduce blood viscosity, speed up blood flow, and increase cerebral blood flow, thereby alleviating or preventing hyperviscosity and making people feel relaxed, clear-headed, and energetic. .
It can prevent and reduce the occurrence of cardiovascular and cerebrovascular diseases
An expert in Qingdao once treated 127 multiple blood donors, 87 cases of hypertension, and 60 cases of ischemic stroke. A controlled study of hemorrheology was conducted, and the results showed that blood donors have a positive effect on reducing the occurrence of cardiovascular and cerebrovascular diseases; a Finnish research team conducted a survey on 278 men aged 42-60, among whom 5 had donated blood. The proportion of patients with coronary heart disease after 20 years is 86% less than those who have never donated blood. Another group of studies followed 1532 people who donated blood 1-2 times. The results showed that only one person developed acute myocardial infarction, with an incidence rate of 0.043%. During the same period, no patients suffered from coronary heart disease. Among the 2,306 people who donated blood, 226 suffered acute myocardial infarction, with an incidence rate of 9.8%, which was significantly higher than the blood donation group. Research by a cardiovascular disease research group in the United States also showed that in 3 years, blood donors (male) suffered from cardiovascular disease. The risk of disease is only 1/2 of those who have not donated blood.
Men donating blood can reduce the incidence of cancer
If the iron content in the body is too low, it is easy to suffer from iron deficiency anemia and slow movement, while if it is too high, it will be counterproductive. "International Cancer" once reported that if the iron content in the body exceeds 10% of the normal value, the chance of suffering from cancer will increase. Appropriate blood donation can prevent cancer. The article also mentioned that women lose a certain amount of iron due to blood loss during the menstrual cycle, so there is no obvious relationship between women's iron content and the occurrence of cancer.
Can promote and improve mental health
A large number of studies have shown that healthy emotions can communicate with the brain and other tissues and organs through the nervous, body fluid, and endocrine systems, keeping them in a good state. It is beneficial to the enhancement of human immunity and resistance. Donating blood is a noble act of saving a life. While helping others and being kind to others, it also purifies your spirit, comforts your soul, and makes your work and life more fulfilling. Those who do good deeds are actually helping others while also helping themselves, which is an important factor in health and longevity.
Can prolong life
Foreign scholars have also conducted a prospective comparative study on 332 people over 66 years old (blood donors) and 399 people of the same age and gender (non-blood donors) , the results showed:
The average life span of the blood donation group was 70.1 years, which was higher than the average 67.5 years of the non-donation group;
The survival rate of the blood donation group was 67%, which was higher than the non-donation group. 40%;
The mortality rate of the blood donation group was 33%, which was lower than the 60% of the non-donation group.
How can citizens participate in blood donation?
Citizens can participate in blood donations organized by units (including streets, villages, and schools); they can also register to donate blood at the blood donation office in their jurisdiction, or donate blood at blood stations or mobile blood collection vehicles. Before donating blood, citizens can A physical examination is required and the health consultation form must be filled out truthfully.
How to protect the needle after donating blood?
Prompt and correct care of the needle eye will reduce or avoid the occurrence of adverse reactions after blood donation.
1. After donating blood, cover the puncture hole with a sterile cotton ball, fix it with tape, and use 3 fingers to press the needle eye along the vein for 5 minutes.
2. Check whether there is oozing or bleeding at the puncture site. If there is bleeding, raise your arm and continue to compress the local area.
3. To protect the puncture hole from infection, do not remove the dressing on the puncture hole within 4 hours.
4. The eye of the needle should not be exposed to water for 1-2 days.
What preparations should be made before donating blood?
If you pass the health examination and participate in blood donation, please make the following preparations before donating blood:
1. Learn about blood donation and eliminate nervousness.
2. Do not take medicine before donating blood. For example, taking aspirin will reduce certain functions of platelets within three days, so do not take it three days before donating blood.
3. Food should be low in fat. You can eat as usual the day before and on the day of donating blood, but low-fat meals are appropriate.
4. No alcohol, especially hard liquor.
5. Get enough sleep and avoid strenuous exercise.
What should you pay attention to after donating blood?
1． Protect the venipuncture site: Stopping bleeding at the puncture site does not mean complete healing. Do not let it be soaked with water or contaminated by unclean objects for at least 24 hours, and do not rub this area.
2. Personal activities should be moderate: Please do not engage in activities such as high-altitude operations, high-temperature operations, driving vehicles, sports competitions, and all-night entertainment on the day after donating blood.
3. Don’t overdo your nutritional supplements: you can eat fresh vegetables and fruits, soy products, dairy products, fresh fish, shrimp, meat and eggs, etc. Please do not overeat.
Why are the blood donation test results different from the hospital test results?
When we organize citizens to participate in voluntary blood donation, some of the blood donations that fail to pass the test are normal in the hospital test. Many people ask why this is?
1. For the health of blood donors and blood users, the blood testing standards set by the Ministry of Health for the purchase of blood collection and supply machines for screening blood donors are much stricter than the standards set by hospitals for patients. For example: the standard of HBSAg blood collection institution is ≤1ng/ml as negative; but the hospital standard is ≤5ng/ml as negative. This means that when the HBSAg test result is between ≤1ng/ml-≤5ng/ml, blood collection Institutions rate it as positive, while hospitals rate it as negative.
2. When selecting test kits, each blood collection institution would rather use kits that are prone to false positive test results and screen more blood donors, and try not to transfuse a single true positive blood Blood recipient.
3. When some blood donors undergo blood tests at blood collection institutions, a certain blood indicator is determined to be unqualified, that is, positive, which does not necessarily mean they have the blood infectious disease hepatitis. Therefore, people who donate blood and test positive often find it normal when tested in the hospital.
Will I be anemic after donating blood?
As long as you donate blood at specified intervals, it will not cause anemia. Because blood donation only temporarily reduces the amount of blood that can be regenerated in the human body, it does not affect the normal regenerative function of human blood. The small amount of donated blood will be restored soon. Anemia itself is a disease. For people with anemia, it will be detected during a physical examination when donating blood. Such people cannot participate in blood donation. Donating blood will never cause anemia. On the contrary, regular blood donation will stimulate the hematopoietic organs, strengthen the organs and hematopoietic function, and be beneficial to the regeneration of human white blood cells.
(1) Physical examination items:
Age: 18-55 years old.
Weight: Male ≥ 50 kg, female ≥ 45 kg.
Blood pressure: 12-20/8-12KaPa (90-140/60-90mmHg), pulse pressure difference: ≥4Kpa (30mmHg).
The body temperature is normal.
(2) Blood test items:
Blood type: ABO blood type.
Blood specific gravity: male ≥1.025, female ≥1.050.
Serum protein content ≥60 g/L.
Alanine aminotransferase (ALT) ≤25 units.
Hepatitis B virus surface antigen (HBsAg) was negative.
Hepatitis C virus antibody (HCV) negative.
HIV antibody (HIV) negative.
The syphilis test was negative.
A must-read for plasma donors
Donating plasma to healthy people is a noble act of treating diseases and saving lives. In order to protect the body of plasma donors and the quality of plasma donors, the country has formulated national standards , technical regulations and management regulations. There are strict regulations for plasma donors. In order to make the majority of plasma donors understand the regulations on plasma donors, we are now promoting it to everyone so that everyone can understand it. Thank you for your cooperation.
Plasma donors must bring their ID cards to register at the plasmapheresis station in the area (county) where they live. After passing the physical examination and laboratory tests, you will need to take two one-inch half-length photos to receive the "Plasma Donor Certificate". Strictly one person must apply for the certificate. Every time you apply for a "Plasma Donor Certificate", you need to go through the plasma donation procedures, and each plasma donation must undergo a physical examination. Anyone who pretends to be someone else will be punished after being found out.
Blood donors can only donate plasma at the plasmapheresis station in the area (county) where they live.
Not allowed to leave the region (county)
Donating plasma from other places. Any donation of plasma from other places violates national regulations and is an illegal act. Once identified, the plasma apheresis station and the plasma donor will be punished .
The state stipulates that plasma should be donated once every two weeks. Plasma should not be donated within two weeks or before the due date, and plasma should not be donated multiple times within two weeks. Plasma apheresis stations must strictly abide by the regulations. . For their own health, plasma donors must also donate plasma every two weeks.
Plasma donors go directly to the plasmapheresis station to complete the plasma donation procedures. There is no need for an intermediary to organize and manage the plasma, and no fees can be obtained from it. This is an illegal "blood domination" behavior, and the state has expressly stipulated that it should be cracked down and banned.
What is the age limit for Chinese citizens to donate blood?
The "Blood Donation Law of the People's Republic of China" stipulates: "The state encourages healthy citizens aged 18-55 to donate blood voluntarily." Regarding the age regulations for blood donation, regulations in various countries around the world are inconsistent, and regulations in various provinces and cities in our country There are some differences too. The provisions of the "Blood Donation Law" are established based on factors such as the physical fitness of our citizens and the need to meet the need for blood. The legal age limit for people with full legal capacity is 18 years old. Unpaid blood donation is a voluntary act of citizens and needs to be decided by people with full legal capacity. The Blood Donation Law stipulates that 18 years old is the minimum age for unpaid blood donation, which is consistent with other legal provisions in my country. Taking into account the physical condition of our citizens and the practices in various places, the law stipulates that the age of 55 years old is the termination age for unpaid blood donation. However, the age for termination of blood donation stipulated by the law is only a general provision of the law, and does not mean that blood donation is not allowed beyond the termination age.