RT Book, Section A1 Powers, Jacquelyn M. A1 Heeney, Matthew M. A2 Kline, Mark W. SR Print(0) ID 1182909625 T1 Anemia T2 Rudolph's Pediatrics, 23e YR 2018 FD 2018 PB McGraw-Hill Education PP New York, NY SN 9781259588594 LK accesspediatrics.mhmedical.com/content.aspx?aid=1182909625 RD 2024/04/24 AB Anemia is defined as a hemoglobin concentration or hematocrit less than normal for a specific age and gender. Both age and gender are essential considerations when making a diagnosis of anemia, as is the fact that some laboratories use only adult normal range values and will erroneously report normal pediatric levels of hemoglobin as low. Using a definition of anemia as 2 standard deviations below the mean results in 2.5% of children meeting the criteria for anemia. Children with such “statistical anemia” should continue to follow along the same hembogloin percentile for age over time; but must also be confirmed as healthy and “normal” by ruling out other etiologies for anemia. Age-related normal means and ranges for hemoglobin, hematocrit, and mean corpuscular volume (MCV) are shown elsewhere (Table 425-1).