What Is a Low Ferritin Blood Level for Teenage Girls?

By Staff WriterLast Updated Mar 29, 2020 1:29:55 PM ET

Normal ferritin levels increase as children grow older, but for teenagers and young girls, the normal range is 7 to 140 nanograms per milliliter, according to WebMD. For adult women, the range is 18 to 160 nanograms per milliliter. Values below these ranges are considered low ferritin levels.