The American Academy of Pediatrics has published a new clinical report in the July 2026 issue of Pediatrics updating its guidance on iron deficiency screening, diagnosis, and treatment in children and adolescents. This is the first major revision since 2010.

The changes expand who gets screened, when screening happens, and how iron deficiency is defined. If your child has a well-visit coming up, these updates are worth discussing with your pediatrician — particularly if you have an infant between 9 and 18 months or a teenager who has started menstruating.

Why Infants Are at High Risk

Iron deficiency is one of the most common nutritional deficiencies among children worldwide, and infancy is a particularly vulnerable window. Infants grow rapidly in their first year of life, and their iron needs outpace what many diets provide naturally.

The new guidelines call for universal screening of all infants between 9 and 18 months. For babies who are primarily breastfed, the AAP now recommends earlier screening — between 9 and 12 months — because breast milk alone does not contain enough iron to meet the needs of an older infant without additional supplementation. Formula-fed infants typically receive iron through fortified formula, but breastfed infants are at comparatively higher risk.

The practical takeaway: if your baby is approaching the 9-month mark and has been primarily breastfed, ask your pediatrician about iron screening at the next well-visit. This is now a standard of care under the updated AAP guidance.

The New Requirement for Adolescents

The July 2026 guidelines also add a meaningful new requirement for adolescents: universal screening for all menstruating teens within one year of their first period and no later than age 14. This is new — prior AAP guidance did not include a universal mandate for this population.

The reasoning is straightforward: menstruation creates regular iron loss, and teenagers are still growing. A teen with a heavy period who is also in an iron-depleted state is at risk for symptoms that affect energy, concentration, and physical performance — all of which matter significantly during the school years.

For teens with heavy menstrual bleeding or a consistently low-iron diet, the guidelines recommend ongoing screening rather than a one-time check. If your teenager has ever described feeling persistently tired or lightheaded, this is worth raising with your family's doctor.

New Diagnostic Thresholds

The updated guidelines establish clearer ferritin thresholds for diagnosing iron deficiency. For young and school-age children, a serum ferritin level at or below 20 ng/mL now defines iron deficiency. For adolescents and menstruating individuals, the threshold is at or below 30 ng/mL.

These thresholds differ from some older clinical standards, which means a child or teen who previously received a normal result under older benchmarks might fall into the deficiency range under the updated guidance. Your child's pediatrician will interpret lab results in context, including symptoms and dietary history.

Treatment: Oral First, Then IV if Needed

The first-line treatment remains once-daily oral ferrous sulfate. This recommendation is not new, but the July 2026 guidelines now formally include intravenous iron therapy as a recommended option for patients who do not respond to oral iron, who have malabsorption syndromes, or who have chronic inflammatory conditions that interfere with iron absorption. Previously, IV iron was used in these cases but was not explicitly endorsed in the AAP's primary guidance.

Treatment decisions always rest with your child's physician. If your child has been on oral iron without improvement, a conversation about IV iron as an alternative may now be more grounded in the AAP's official recommendations.

What's Next

The full AAP clinical report, titled "Prevention, Screening, Diagnosis, and Treatment of Iron Deficiency and Iron Deficiency Anemia in Infants, Children and Adolescents," is available in the July 2026 issue of Pediatrics and on healthychildren.org, the AAP's family-facing resource. Colorado Springs families can bring these updated screening benchmarks to their child's next well-visit at any pediatric practice in the area. COS Parenting will continue to cover AAP guidance updates as they are published.