yes and no... yes, like Melissa said numbers in newborns are not aways accurate, but I wanted to point out that, aside from testing too young and possibly not getting a good test result, the numbers do not just keep going up and up the older a person gets. Off the cuff, I'd say that generally speaking once a person is no longer an infant and if the test is done correctly at a CFF center, that number shouldn't change much for the rest of their lives.