At just 5-months-old, a Prince George's County baby has already been through more than his fair share. Little Blake is a fighter, but his parents need the public's help to save his life.

Since the first day of Blake Thomas' life, the odds have been stacked against him. Blake was born at just 23 weeks, with a 20 percent chance of survival.

"He had a lot of complications with his lungs, his kidneys, brain bleeds," said his mother, Rebecca Thomas.

"He was about the size of my hand," said his father, Mike Thomas.

But Blake has already proven that beating the odds is something he was born to do.

"It all resolved on its own," Rebecca said.

Then, two weeks before Blake was supposed to go home, the doctors delivered more bad news to his parents.

"They found a mass in his liver. They said, Blake has a malignant tumor," Rebecca said. "It was just one thing after another, like what's next?"

Blake has an extremely rare form of liver cancer. His only chance for survival is a new liver.

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"We've had potential donor calls, but they've all fallen through," Mike said.

Blake is going through chemo treatments now, but he's running out of time.

"If we don't have a liver by Wednesday, after his last chemo treatment, his body won't tolerate much more chemo. The tumor will remain in his body with potential to grow and spread," his mom said.

His parents are asking anyone between the ages of 18 and 50 with blood type A or O to get tested.

"If you find it in your heart to fill out his questionnaire, please do so," Rebecca said. "Help us save our baby's life, he's been through a lot."

Rebecca and Mike have been through a lot, too. But like Blake, they're not done fighting.

"No, we are not giving up on him," Rebecca said. "He hadn't given up on himself, why would we?"

It's a good thing, too. Because the world needs more of that smile.

If you would like to get tested, please email Blake's parents, Rebecca and Mike.

If you aren't an eligible donor, but would like to help, donations are being accepted on the family’s GoFundMe page.