California now moves to the forefront as it will test for 75 conditions through the standard infant heel prick. That more than doubles the disorders the old test covered. "This is a wonderful day, a great day, where we're not leaving any babies behind," said David Swift, who credits expanded testing with saving his daughter's life. The mandatory screening program will apply to all the 500,000-plus babies born in the state each year, though parents can opt out for religious reasons. Since the state began piloting the program May 2, the tests have identified 15 babies with serious conditions that previously would have gone undetected