Since launching its appeal, the Canadian Blood Services (CBS) has seen a massive increase, according to a spokesperson from the agency.
"In the past week donations have increased by 20 per cent," the organization told The Huffington Post Canada in an email. "While we have made progress, the inventory is still not where it needs to be."
The national blood supply had hit its lowest levels since 2008, when the all-call to donate went out, with levels dipping toward a three-day supply, according to CTVnews.ca. The agency usually favours a five-to-eight day supply.
CBS said in a press release it has reduced the need by one-third, but it is encouraging people to book appointments, rather than rely on walk-in availability, in order to make sure they can give.
And, that they qualify to give. There are no plans for CBS to revise the policy that prevents men who have sex with men from giving blood, which many have suggested could help alleviate the problem. Currently, the rules state a man must not have engaged in intercourse with a man for five years before he gives blood.
"We understand not being able to donate blood, for any reason, may be upsetting," the CBS spokesperson wrote. "The MSM policy is rooted in current statistics and scientific evidence and is not based on sexual orientation."
The spokesperson noted many people cannot donate blood, for reasons such as health issues, medication and high-risk behaviours.
For those who can and want to donate this Thanksgiving weekend or otherwise, you can find a clinic near you at the bottom of this page.
Countries' Policies On Gay Male Blood Donations
United Kingdom(01 of17)
Open Image ModalCountry: United Kingdom (England, Scotland and Wales)Policy on MSM blood donors: Men who haven't had sexual contact with another man for a year are eligible to give blood. (credit:Oli Scarff/Getty Images)
Poland(02 of17)
Open Image ModalCountry: PolandPolicy on MSM blood donors: No ban. People of all sexual orientation involved in any kind of sexual activity — as long as they are confident about their safe sex practices — are welcome to donate blood. (credit:Alamy)
Japan(03 of17)
Open Image ModalCountry: JapanPolicy on MSM blood donors: Men who haven't had sexual contact with another man for a year are eligible to give blood. (credit:KAZUHIRO NOGI/AFP/Getty Images)
Sweden(04 of17)
Open Image ModalCountry: SwedenPolicy on MSM blood donors: Men who haven't had sexual contact with another man for a year are eligible to give blood. (credit:JOHANNES EISELE/AFP/Getty Images)
New Zealand(05 of17)
Open Image ModalCountry: New ZealandPolicy on MSM blood donors: Men who haven't had sexual contact with another man for 12 months are eligible to give blood. (credit:SAYGIN SERDAROGLU/AFP/Getty Images)
France(06 of17)
Open Image ModalMexico(07 of17)
Open Image ModalCountry: MexicoPolicy on MSM blood donors: No ban. Men who have had sexual contact with other man are eligible to give blood. (credit:Shutterstock)
Argentina(08 of17)
Open Image ModalCountry:ArgentinaPolicy on MSM blood donors: No ban. Men who have had sexual contact with other man are eligible to give blood. (credit:ALEJANDRO PAGNI/AFP/Getty Images)
Italy(09 of17)
Open Image ModalCountry: ItalyPolicy on MSM blood donors: No ban. Men who have had sexual contact with other man are eligible to give blood. (credit:Alamy)
Brazil(10 of17)
Open Image ModalCountry: BrazilPolicy on MSM blood donors: Men who haven't had sexual contact with another man for a year are eligible to give blood. (credit:PEDRO LADEIRA/AFP/GettyImages)
United States of America(11 of17)
Open Image ModalCountry: USAPolicy on MSM blood donors: The FDA has just lifted its ban on gay men donating blood. Now, men who haven't had sexual contact with another man for a year are eligible to give blood. (credit:Alamy)
Uruguay(12 of17)
Open Image ModalCountry: UruguayPolicy on MSM blood donors: No ban. Men who have had sexual contact with other man are not restricted from giving blood. (credit: MIGUEL ROJO/AFP/Getty Images)
Belgium(13 of17)
Open Image ModalCountry: BelgiumPolicy on MSM blood donors: There is an indefinite ban on blood donations for men who have had sexual contact with other men. (credit:Gareth Copley/Getty Images)
Hungary(14 of17)
Open Image ModalCountry: HungaryPolicy on MSM blood donors: Men who haven't had sexual contact with another man for a year are eligible to give blood. (credit:ATTILA KISBENEDEK/AFP/Getty Images)
Venezuela(15 of17)
Open Image ModalCountry: VenezuelaPolicy on MSM blood donors: There is an indefinite ban on blood donations from men who have had sexual contact with other men. Women may give blood, however donors are requested to complete a "Yes/No" questionnaire about his/her sexual life that may inquire about sexual details. (credit:JUAN BARRETO/AFP/GettyImages)
Israel(16 of17)
Open Image ModalCountry: IsraelPolicy on MSM blood donors: Men who have had sexual contact with other men from 1977 onward are not permitted to donate blood. (credit:Alamy)
Spain(17 of17)
Open Image ModalCountry: SpainPolicy on MSM blood donors: No ban. Men who have had sexual contact with other man are eligible to give blood. (credit: LLUIS GENE/AFP/Getty Images)