Which value corresponds to the NIOSH lead blood level of concern?

Which value corresponds to the NIOSH lead blood level of concern?

• A. 40 ug/dL
• B. 3.5 ug/dL
• C. 25 ug/dL
• D. 15 ug/dL

Answer: (C)

The main idea is identifying the blood lead level that signals you must take action to protect workers. NIOSH uses 25 micrograms per deciliter as the level of concern for occupational lead exposure. When a worker’s blood lead reaches or exceeds this value, it triggers medical follow-up, a review of exposure controls, and stepped-up monitoring to prevent further elevation. The other numbers aren’t the recognized level of concern in this context: 40 μg/dL is a higher threshold seen in some guidelines or contexts, while 15 μg/dL and 3.5 μg/dL are below the level of concern and do not prompt the same level of action.

The main idea is identifying the blood lead level that signals you must take action to protect workers. NIOSH uses 25 micrograms per deciliter as the level of concern for occupational lead exposure. When a worker’s blood lead reaches or exceeds this value, it triggers medical follow-up, a review of exposure controls, and stepped-up monitoring to prevent further elevation. The other numbers aren’t the recognized level of concern in this context: 40 μg/dL is a higher threshold seen in some guidelines or contexts, while 15 μg/dL and 3.5 μg/dL are below the level of concern and do not prompt the same level of action.