An invisible thread connects a healthy stranger sitting in a donation chair to a patient fighting for survival in a hospital ward. It is a quiet but highly coordinated chain of logistics, science and human compassion that transforms a single act of generosity into a lifeline.
As the world marks World Blood Donor Day, health experts are highlighting the importance of voluntary blood donation and the life-saving process behind it.
In Kenya, donors must be healthy, weigh at least 50kg and have adequate haemoglobin levels. After donating about 450ml of blood, each unit is screened for infections, tested for blood type and separated into components such as red blood cells, platelets and plasma.
Kenya collects 250,000–412,000 units of blood annually, below the 500,000–1 million units needed. Because blood is separated into components, a single donation can help several patients, including trauma victims, cancer patients and those with burns or clotting disorders.
Kenya’s blood supply is managed through six regional transfusion centres and over 20 satellite centres that collect, process and distribute blood nationwide.
However, maintaining adequate supplies remains a challenge, as the country relies heavily on voluntary donors, especially students and young adults. Health experts encourage regular donation, with men able to donate every three months and women every four to six months.
Dr Paul Masinde stresses the importance of proper post-donation care.
“After donating blood, individuals should drink plenty of fluids, avoid strenuous physical activity for the rest of the day and take a few minutes to rest before leaving the donation centre. Most people recover quickly and resume their normal activities within a short time,” he explains.
He also addresses some of the common misconceptions that discourage potential donors.
“Many people believe donating blood causes permanent weakness, infertility or significant weight loss, these are myths, the body naturally replaces the donated blood components. For healthy individuals, blood donation is a safe process that does not affect fertility or long-term health,” says Dr Masinde.
While blood transfusion remains essential, doctors increasingly employ strategies to minimise the need for donor blood where possible. These include iron supplementation, medications that stimulate red blood cell production, advanced surgical techniques that reduce blood loss, and autologous transfusion, where patients receive their own stored blood during medical procedures.
Volume expanders may also be used in certain situations to maintain circulation.
The chain of solidarity begins with one donor, passes through the hands of laboratory scientists, transport teams and healthcare workers, and ultimately reaches a hospital bed where a life hangs in the balance.
In that moment, a stranger’s simple decision to donate becomes the difference between despair and hope, illness and recovery, life and death.