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Percentage of Ecuadorian Andean adults with blood lead (PbB) levels ≥ 25 μg/dL* for the years 1996, 1997, 1998, 2003, 2006, 2007 and 2012.
| Year | 1996 | 1997 | 1998 | 2003 | 2006 | 2007 | 2012 |
| Percentage | 63.4 | 20.0 | 9.4 | 28.6 | 47.8 | 70.0 | 41.0 |
A PbB level of ≥ 25 μg/dL is defined by the U.S. Centers for Disease Control and Prevention (CDC) as elevated in adults.22
