Elevated blood lead level was associated with risk of attention deficit and hyperactivity
disorders (ADHD). While hair mineral analysis was non-invasive and feasible for young
children, association between hair lead levels and ADHD risk were inconclusive. The study demonstrated that hair lead levels were significantly correlated with blood lead levels in ADHD children (r = 0.555, p = 0.000).
Tippairote T, Temviriyanukul P, Benjapong W, Trachootham D: A pilot case-control study of lead and other hazardous elements in hair samples and risk of attention deficit and hyperactivity disorders in Thai children. Thai J Toxicology 2016, special issue: proceedings of the 7th National Conference in Toxicology (NCT7).