Why should the interval between blood donations be 6 months?

The survival cycle of red blood cells is 120 days, with an interval of 6 months, which is more scientific, and it is generally three months abroad, and different physiques have different intervals.

As a special economic zone in China, Shenzhen enjoys the power of legislative power to formulate special regulations for the special economic zone. Generally speaking, the level of effect of SEZ regulations is lower than that of laws enacted by the National People's Congress itself, but it is higher than that of ordinary normative legal documents formulated by state organs at the same level as those authorized by SEZs. Compared with local regulations, SEZ regulations are obviously unconventional and preemptive in many aspects, and sometimes have a certain degree of trial.

Before the promulgation of the Blood Donation Law by the Standing Committee of the National People's Congress on December 29, 1997, that is, on September 15, 1995, the first meeting of the Standing Committee of the Second People's Congress of the Shenzhen Special Economic Zone passed the Regulations on the Administration of Unpaid Blood Donation and Blood by Citizens of the Shenzhen Special Economic Zone. As long as the legislative spirit of the special regulations of the SAR is consistent with the Blood Donation Law, they can obtain legal status within the jurisdiction of the SAR as long as their legislative spirit is consistent with the Blood Donation Law. The second paragraph of Article 12 of the Regulations on Unpaid Blood Donation and Blood Management of Citizens of the Shenzhen Special Economic Zone stipulates:

Citizens who donate blood without compensation should donate between 200 milliliters and 400 milliliters of blood each time, and the interval between the two doses of whole blood shall not be less than three months. ”

It takes time for the blood to regenerate, especially in adults. Because when a person becomes an adult, the red bone marrow that can make blood in the flat bone becomes the yellow bone marrow that can not make blood. Therefore, in order to replenish the lost blood after the adult is blood, it takes time to turn the yellow bone marrow into red bone marrow, and it takes time to make blood after the change.

The time interval between blood donations is usually 3 months medically, but blood banks generally require 6 months.

1) Fill in the blood donation registration form truthfully, and do not lie or conceal past medical history.

2) One blood donation is generally 200 ml, and the maximum is not more than 400 ml, and the interval between two collections is not less than 6 months.

3) After passing the blood donation examination, you should participate in blood donation at the specified time so as not to affect the blood plan of the hospital.

1. The "Blood Donation Law" stipulates that the amount of blood collected by blood donors is generally 200ml, and the maximum amount is not more than 400ml, and the interval between two collections is not less than 6 months. According to the blood laws of the human body, red blood cells also have a process of continuous aging and death, and have a certain lifespan.

2. Blood donation, which is generally understood as unpaid blood donation in the mainland, is also known as blood donation in Hong Kong and Taiwan, which refers to the donation of whole blood, plasma or blood cell components by blood donors. This blood is usually stored in a blood bank, which is kept by medical units and blood banks in case of blood transfusions to those who need it. Compared with paid blood donation, the blood quality of unpaid blood donation can be guaranteed, which is beneficial to the health and safety of the blood recipient.

Interested blood donors can complete unpaid blood donation at fixed and mobile blood donation stations, blood donation houses, and blood donation vehicles in various regions. Blood collection and supply institutions will regularly arrange blood collection vehicles to schools, units, and ** dense areas, or cooperate with the activities of relevant institutions to solicit blood donors.

Six months. Article 9 of the Blood Donation Law of the People's Republic of China stipulates that blood donors must undergo necessary health examinations free of charge. If the physical condition does not meet the conditions for blood donation, the blood station shall explain the situation to the person and shall not collect blood.

The physical health conditions of blood donors shall be prescribed by the health administrative department. The amount of blood collected by blood donors at the blood bank is generally 200 milliliters at a time, and the maximum amount of blood collected shall not exceed 400 milliliters, and the interval between the two collections shall not be less than six months. It is strictly forbidden for blood stations to collect excessive or frequent blood from blood donors in violation of the provisions of the preceding paragraph.

The 6-month interval between whole blood is mainly due to the fact that the metabolic cycle of red blood cells is 120 days, and red blood cells are one of the main components of the blood.

In order to better protect blood donors, the blood donation cycle is set at 120 days for the sake of safety.

Plasma recovers in a few hours, so plasma donation at the pulp collection station is a 14-day interval cycle;

The platelet metabolism cycle is 7-11 days, so the platelet donation cycle is also 14 days.

Leukocytes are rarely collected separately in China, and the interval period is shorter than that of whole blood.

If you have any questions, please post on the blood donation bar, there are thousands of blood donors and volunteers like you and me, and it is also a relatively vibrant, wide and deep unpaid blood donation community.

In mainland China, the blood donation law promulgated in 1998 is relatively conservative, stipulating that the interval between two whole blood donations should not be less than six months.

In the more than 100 countries and territories around the world that promote unpaid blood donation, the vast majority are three months or less.

In Shenzhen, Hainan, Taiwan, Macao, and Hong Kong, the regulations are all three months.

There will be no problem with donating blood after three months.

In our country, the shortest interval between platelet donations is 14 days. Donations are allowed 24 times a year.

The red blood cells in the blood account for more than 40 percent, and the lifespan is about 120 days, and all of them are replaced in four months. That is, it is the red blood cells that recover the least.

More than 50 percent is plasma, which is water and nutrients for digestion.

Platelets and white blood cells live for about 10 days.

The interval between blood donations is determined based on the lifespan of red blood cells.

In almost all parts of mainland China, there must be an interval of six months between donating whole blood and then donating whole blood again.

However, there are two local exceptions, Shenzhen, where the interval between two whole blood donations can be three months, and Hainan, where the interval between two whole blood donations, for males, can be three months; Female, 4 months.

Nationally, the shortest time to donate blood components (platelets or white blood cells) after donating whole blood is as short as three months; The shortest interval between donating whole blood after the donation is completed can be one month.

The interval between donations, which can be 14 days (varies from place to place, but in some cases it is one month).