Notwithstanding §B of this regulation, a medical laboratory shall report, to the Department of the Environment, the information required under Environment Article, §6-303, Annotated Code of Maryland. A medical laboratory that performs blood lead analysis shall report the results of all blood tests for lead poisoning, performed pursuant to Regulation .04 of this chapter for a child who resides in Baltimore City, to the Commissioner of the Baltimore City Health Department in accordance with Article-Health, §4-607, Baltimore City Revised Code. The Commissioner of the Baltimore City Health Department may report the information received under §B of this regulation to the Baltimore Immunization Registry Program. The Department may report the results of blood lead analysis to an immunization registry developed by the Department. The Department of the Environment may report the results of blood lead analysis to an immunization registry developed by the Department.