house bill 4864 - Health: children; definition of elevated blood lead level; modify. Health: children; definition of elevated blood lead level; modify. Amends sec. 5456 of 1978 PA 368 (MCL 333.5456). https://legislature.mi.govv/Home/GetObject?objectName=2025-HB-4864 Thu, 25 Jun 2026 13:24:58 GMT house bill 4864 referred to second reading Health: children; definition of elevated blood lead level; modify. https://legislature.mi.govv/Home/GetObject?objectName=2025-HB-4864 https://legislature.mi.govv/Home/GetObject?objectName=2025-HB-4864 Thu, 25 Jun 2026 13:24:58 GMT