The Singapore Red Cross is seeking O+ blood type donors to come forward and donate blood this weekend to support the needs of hospitals here.

The national bloodbank's stocks are "at low levels yet on a slow recovery", it said in a statement. Those keen to donate can call 62200183 for enquiries and appointments.

In Singapore, about 400 units of blood are needed each day for blood transfusions. Some 110,000 units are needed annually.

Blood donations here have increased 80 per cent over the last decade, from about 66,000 units in 2001 to more than 118,000 units in 2012, but the demand for blood here is expected to grow by 3 per cent each year, partly due to the ageing population.