tokens: Confirmation of a positive screening result usually did not start before the second week of life ( median ages : 9.5 days [ IVA ] , 9 days [ GA - I ] , 8.5 days [ PA , MMACBL ] ) and was completed early in the third week of life ( median ages : 15 days [ IVA , PA , MMA ] , 14.5 days [ GA - I ] ) .