GPT and infection: Inaddition, ALT levels tended to be higher during the first year of life amongthose in the study who subsequently spontaneously cleared their infections.Another prospective study of 45 children with perinatally acquired HCV infection(median age: 12 years) found that children who spontaneously cleared theinfection had higher ALT levels during the first 2 years of life than those whodid not (62).