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This chart shows CDC/NIOSH/ABLES Elevated blood lead level case definition in perspective. [2] The public health objective of the ABLES program is identical to the Occupational Safety and Health objective 7 in Healthy People 2020, which is to reduce the rate of adults (age 16 or older) who have BLLs ≥ 10 μg/dL. [3]
[3] [10] Blood lead levels 50 to 1,000 times higher than preindustrial levels are commonly measured in contemporary human populations around the world. [3] The National Academies evaluated this issue [12] in 1991 and confirmed that the blood lead level of the average person in the US was 300 to 500 times higher than that of pre-industrial humans.
The report "summarizes the results of the preliminary investigations, which indicated that the elevated water lead levels might have contributed to a small increase in blood lead levels (BLLs)". The report describes the background, and the various kinds of blood tests it employed, and explicitly states: "All blood tests were used in this analysis."
Lead is widely understood to be toxic to multiple organs of the human body, particularly the human brain. Concerns about even low levels of exposure began in the 1970s; in the decades since, scientists have concluded that no safe threshold for lead exposure exists. [2] [3] The major source of lead exposure during the 20th century was leaded ...
During the end of the 20th century, the blood lead levels deemed acceptable steadily declined. [298] Blood lead levels once considered safe are now considered hazardous, with no known safe threshold. [97] [299] In the late 1950s through the 1970s Herbert Needleman and Clair Cameron Patterson did research trying to prove lead's toxicity to ...
Lead-based paint inspections will evaluate all painted surfaces in a complex to determine where lead-based paint, if any, is present. The procedures for lead inspections is outlined in the United States Department of Housing and Urban Development (HUD) Guidelines, Chapter 7, 1997 Revision. The other testing is a lead-based paint risk assessment.
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Unlike its counterpart, the Occupational Safety and Health Administration, NIOSH's authority under the Occupational Safety and Health Act [29 CFR § 671] is to "develop recommendations for health and safety standards", to "develop information on safe levels of exposure to toxic materials and harmful physical agents and substances", and to "conduct research on new safety and health problems".
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