More than 50 people every day are needed to give blood in Aberdeen during December to maintain stocks over the Christmas period.
The Scottish National Blood Transfusion Service (SNBTS) has launched its festive appeal, with 470 people across Scotland needed to give blood every day.
In Aberdeen, a total of 51 people are required to ensure that stocks can be in place over Christmas.
This year, the big day falls on what is traditionally one of the strongest collection days of the week.
Lynne Willdigg, associate director of donor services at SNBTS, said: “There are eight different blood groups, and we aim to maintain a five to seven-day supply of each one at all times.
“To keep supplies at safe levels overall in Scotland, we need 470 donors each day and all blood groups are needed to support patients, just some more than others depending on demand.
“As Christmas Day is a Tuesday this year, which is traditionally one of our strongest collection days, we are asking donors to come forward now to ensure stocks continue to build in the run up to the public holiday.”
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It is hoped people will ensure they know their blood group and come forward to give over the festive period.
Jemma McRae, 43, from Aberdeen, penned a poem earlier to thank SNBTS for the blood transfusion she received during treatment for cancer.
She encouraged people to sign up, and said: “There’s so many people in need of blood, and it doesn’t take long to do.
“I had a blood transfusion, and it made a huge difference to my life.”
O-positive is Scotland’s most common blood group, with 191 people in Scotland needed each day, whereas O-negative is the only blood group that can be given to anyone, with at least 71 donors needed per day.
Anyone aged over 17, who is in generally good health and weighs more than 7st 12lbs, could be eligible.
To register as a donor, call 0845 90 90 999, or visit scotblood.co.uk