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. 2017 Oct 24;125(10):102001. doi: 10.1289/EHP2482

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Photograph of a woman and her young son in a doctor’s waiting room. — State and federal screening programs are intended to catch high blood lead levels (BLLs) early. Most states at least recommend that children be tested at ages 1 and 2 years. Some states require that all 1- and 2-year-olds be tested. Image: © freemixer/iStockphoto.