The difference between donating platelets and donating blood

Our unit and work organization often organize blood donations. During the process of blood donation, we also need to understand some relevant knowledge. Platelet donation is mainly divided into different structures. First of all, in the process of blood donation, we will reduce platelets, and these platelets will slowly grow back later. As long as the number of platelets in the body is normal, there is no need to worry. If the amount of platelets in the body is relatively small, it must be slowly repaired through some diet and body care.

Blood donation is divided into donation of whole blood and blood components. Blood donation is divided into whole blood donation and adult blood donation.

There are two major types of blood: plasma and blood cells; blood cells are divided into: red blood cells, white blood cells, and platelets.

Donating whole blood means drawing blood directly from blood vessels (in my country, generally 200, 300, or 400 ml are drawn at a time).

To donate platelets, special equipment is required. Whole blood is collected and placed in a disposable container. After high-speed rotation, the blood components will be separated into layers. Plasma is at the top, accounting for 5-60%, platelets and white blood cells are in the middle, very few, and red blood cells are at the bottom, accounting for more than 40%.

The platelets are retained and the other components are returned to the body. After several cycles, enough platelets are collected for therapeutic purposes.

A portion of the plasma must also be retained, as the platelets are stored in the plasma.

Since red blood cells have a relatively large specific gravity, nearly half of them can be separated by donating whole blood, so red blood cells are not collected alone.

The amount of white blood cells used is very small (white blood cells are antiviral and are generally replaced by drugs).

The amount of platelets used is very large, and blood components are usually collected by machine, which is platelets.

Blood Donation Law

The "Blood Donation Law of the People's Republic of China" is a regulation formulated to ensure the medical clinical blood needs and safety, protect the health of blood donors and blood users, promote the humanitarian spirit, and promote the construction of socialist material and spiritual civilization. Adopted at the 29th Session of the Standing Committee of the Eighth National People's Congress of the People's Republic of China on December 29, 1997, and effective from October 1, 1998.

New rules for blood donation

The newly revised "Health Examination Requirements for Blood Donors" came into effect on July 1, 2012, which stated that the age of blood donors could be extended to 60 years old, and the time interval for machine-collected platelets was also changed. The new regulations increase the blood donation volume by 300 ml from the original 200 ml and 400 ml. At the same time, the interval between single-donor platelet donations was reduced from 4 weeks to 2 weeks.

Lesbians can donate blood, but gay men who have sex are still prohibited from doing so. Starting this month, new "Health Examination Requirements for Blood Donors" were officially implemented, and China's Ministry of Health lifted a 14-year ban on blood donations from lesbians.