The hospital said that it needed 500 units of type-A daily to ensure enough supply for patients at the hospital and the north region, of which it is the biggest blood bank.
Many patients, especially children, have had to suspend treatment for blood related diseases, the online newspaper Vnexpress reported.
Luu Ban Quan, 8, of Bac Kan Province, suffers from Thalassemia, an inherited blood disorder caused when the body does not make enough haemoglobin. He is one of the children at the hospital children waiting for a type-A blood transfusion.
Quan has had to go to the hospital every six weeks for blood transfusion since he was four months old.
The mother of Luu Uyen Nhi – a 5-year-old girl from the northern province of Vinh Phuc suffering from blood cancer — said she was very worried about the depletion of the blood supplies.
The hospital has asked people throughout the country to donate blood, especially type-A. The hospital's blood donation site is open between 7:30am and 10pm every day. People can call 04 3868 6008 or go to the hospital's official website www.nihbt.org.vn for further information.
At present, 90% of the blood bank comes from blood donors and 10% is bought.
Under a circular issued in 2014 by the Ministry of Health, it costs about VND603,000 (US$27) per unit of blood.