Earlier this year former health minister Edwin Poots won his appeal against findings that his prohibition was irrational and infected by apparent bias.
Senior judges in Belfast also held there was no basis for concluding that the decision was predetermined by his Christian beliefs.
They further ruled that it was up to Stormont, rather than the British Health Secretary, to decide when gay men can give blood.
But their verdict is now to be scrutinised by the Supreme Court in London.
Read more at irishnews.com.
Photo By Lance Cpl. Shawn Valosin (https://www.dvidshub.net/image/1189257) [Public domain], via Wikimedia Commons