Over nearly 50 years, Leslie Sinclair has given a formidable 125 pints of blood.
But on his last trip he was turned away after refusing to answer a question on whether or not he was pregnant.
Mr Sinclair, 66, was told to fill in a form which asked whether he was expecting a child or had been pregnant in the past six months.
When he complained that as a man in his 60s this question did not apply and he should not have to answer it, Mr Sinclair said staff at the clinic told him they could not accept his blood.
The stand-off took place as NHS England launched a campaign earlier this week to recruit a million more blood donors over the next five years after numbers fell during the pandemic. The Scottish National Blood Transfusion Service (SNBTS) began a drive earlier this month to find 16,000 new donors in the coming year.
It emerged last night that all potential donors are asked if they are pregnant to ‘promote inclusiveness’ and because pregnancy is ‘not always visually clear’.
Angry at the refusal to take his blood, Mr Sinclair walked away and last night told of his frustration at the ‘nonsensical’ decision.
The father of two, from Stirling in central Scotland, said: ‘I am angry because I have been giving blood since I was 18 and have regularly gone along. I’m very happy to do so without any problem.
Read more: Meet some of the brain dead people we are supposed to trust with our health: Male blood donor, 66, turned away from clinic after he refused to say if he is pregnant on pre-donation questionnaire