Final answer:
The 2008 AAP guidelines recommend H&H measurements for children at ages 0 to 2.5 and 2.5 to 6 to screen for anemia.
Step-by-step explanation:
The American Academy of Pediatrics (AAP) guidelines from 2008 recommend routine hemoglobin and hematocrit (H&H) measurements at several stages throughout childhood. Specifically, these measurements should be taken at children ages 0 to 2.5, and again between children ages 2.5 to 6. These checkpoints are set to screen for anemia, which is relatively common in these age groups due to rapid growth and dietary changes. H&H measurements are part of preventive healthcare visits and can identify health issues that might require further investigation or intervention.