The service closed temporarily in February to ensure that its facilities are brought up to EU standards.
A Health spokesman said the service will remain in its current location and remedial works will be carried out to bring it up to the standards required.
This work is scheduled for May and early June. An inspection of the facility is expected to take place in late June or early July with re-opening scheduled shortly after that.
In February Health Minister Andrew Green put contingency measures in place to ensure that the Island can continue providing emergency blood transfusions in the event of disruption from the UK.
Senator Green signed a Ministerial Decision which renewed that States’ licence to collect and prepare blood locally for six months, should they need to until upgrade work has been completed.
However, the Health spokesman said: ‘The back-up system of sourcing blood stocks from the UK has been working well, including during the adverse weather when there was some deliberate over-ordering.’
