When a patient requires blood, Hospital’s ask the patients to go to the nearby Blood Banks and get the required Blood Units from them.
The Challenge that is faced by the patients as well as the Hospital staff is, they don’t know whether the required Blood Units are available in that particular Blood Bank. So the Hospital has to guess and send the patient to Blood Banks, the patients have to go from one Blood Bank to another to get the required Blood Units.
This is time consuming and very difficult in case of emergencies and can be life threatening.