Canadian Blood Services is hoping people will stop by a clinic over the holiday season and make a blood donation.
The agency says collecting blood at this time of year is a challenge.
Lots of people are out of town, but there's a demand for blood because many people are receiving cancer treatment or undergoing life-saving surgery and emergency care.
In Saskatchewan, the agency is on track to get only half of the donations it needs.
There are hundreds of donation appointments available in Regina and Saskatoon this week. The good news is, on the weekend people were coming in, including Saskatoon's Helena Gorin.
"I've always wanted to do something good for people but did not have a chance. [Giving] blood is a first start for me," she said as she lay on a cot giving a blood donation.
The Saskatoon blood donor clinic will be open until noon today. In Regina, the platlet clinic only will be open, until 12:45 p.m.
Clinics will be closed on Christmas, but will reopen on Boxing Day.