Environmental Intervention Blood Lead Level (EIBLL) as defined by HUD is:

Environmental Intervention Blood Lead Level (EIBLL) as defined by HUD is:

• A. 20 ug/dL for a single test, or 15-19 ug/dL in two tests 3 months apart
• B. 25 ug/dL for a single test
• C. 15 ug/dL for a single test
• D. 30 ug/dL in either test

Answer: (A)

Environmental Intervention Blood Lead Level is the HUD threshold that triggers action to reduce lead hazards in housing. It uses two paths: a single blood lead measurement of 20 micrograms per deciliter (µg/dL) or higher, or two measurements in the range of 15–19 µg/dL taken at least three months apart. This dual rule ensures immediate intervention for a clear, high reading, and confirms persistent moderate elevation with a second test before triggering environmental actions. The best choice mirrors this exact definition by including both criteria. The other options don’t capture both parts—the single-test threshold, the two-test confirmation, or both—so they don’t match HUD’s stated criteria.

Environmental Intervention Blood Lead Level is the HUD threshold that triggers action to reduce lead hazards in housing. It uses two paths: a single blood lead measurement of 20 micrograms per deciliter (µg/dL) or higher, or two measurements in the range of 15–19 µg/dL taken at least three months apart. This dual rule ensures immediate intervention for a clear, high reading, and confirms persistent moderate elevation with a second test before triggering environmental actions. The best choice mirrors this exact definition by including both criteria. The other options don’t capture both parts—the single-test threshold, the two-test confirmation, or both—so they don’t match HUD’s stated criteria.