“Game of Thrones” and American Red Cross have teamed up for a national blood drive which includes special “Game of Thrones” prizes but some gay men are feeling left out because of the Food and Drug Administration guidelines.

The show’s “Bleed for the Throne” campaign gives fans a chance to donate blood in an “immersive experience” at SXSW in Austin, Texas, from March 7-9. Fans who can’t make it to SXSW can donate blood at specialty drives in 43 states until March 17.

Participants will receive a blood-splattered Iron Throne T-shirt and will be entered to win a chance to attend the show’s final season premiere on April 14 in New York City.

Donate blood for the good of the realm.#GameofThrones is teaming up with @RedCross to join the fight for the living. Visit https://t.co/5MbSh6Gdlt for more info. https://t.co/RneQng9dQf

— Game of Thrones (@GameOfThrones) February 19, 2019

However, federal blood-donation guidelines will prevent some gay men from participating in “Bleed for the Throne.” According to the Food and Drug Administration, men must abstain from sex with other men for 12 months before they are allowed to donate blood.

 Joe Stanieich-Burke, 29, told the Daily Beast that this exclusion is “going widely unnoticed.”

“It bothers me that my perfect, healthy gay blood isn’t a viable option unless I abstain from sex for 12 months, and that’s not gonna happen,” Stanieich-Burke said. “I consider this a right for gay men that is going widely unnoticed.”

One Twitter user tweeted: “While cool for GoT fans, a reminder that this whole initiative and contest discriminates against gay and bi men, who are still banned from donating blood for bigoted, discriminatory reasons.”

Another user tweeted: “Bold of Apple to give my gay ass an ad for blood donation.”

According to the Daily Beast, fans who aren’t eligible to donate blood can still participate in the contest by contacting the Red Cross Donor Supply Center. However, the Daily Beast notes that was not clearly stated in its public promotion of the contest.

A HBO spokesperson released a statement saying that there are other ways for fans who cannot donate blood to participate in sweepstakes and interact with the campaign.

“The ‘Bleed for the Throne’ campaign is and has always been open to everyone. Knowing that FDA regulations may prohibit blood donation by some, we have created multiple ways for fans to interact with the campaign, including entry to the activation at SXSW and the season 8 premiere sweepstakes. While the SXSW activation filled up quickly, a standby line will be available while the activation is open. Those unable to donate blood in national blood drives can still enter the sweepstakes by contacting the Red Cross Donor Support Center with a request to be entered, along with their name, mailing address and a valid email. Inclusivity is a key HBO value, and we have long been supporters of the LGBTQ+ community,” reads the statement.