Updated

Scott Baio's baby girl tested positive for a potentially fatal disorder just one day after she came home from the hospital last November — but the result was false, the actor told Celebrity Baby Blog.

Tests showed Bailey DeLuca, who was premature, might have GA-1, a metabolic disorder that can cause seizures and lead to coma and death.

"It was the worst time in my life," Baio, 47, said. "Every breath that you take, every thought that you have, every moment that you're conscious, it's all you're thinking about," Baio told CBB. "The disease is a constant in your brain. It never leaves you."

"Every time [Scott] would see a child, see a baby, he would just break down," said his wife Renee Sloan, 39. "It was so tough to go through the holidays, our wedding ... all the while knowing, our kid may die." The couple married in December.

Testing took 10 weeks, and when doctors told the couple Bailey was completely healthy, "we jumped through the ceiling," Baio said.

Baio played Chachi Arcola on "Happy Days" and Charles on "Charles and Charge."

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