Read the Law: Md. Code, Environment §§ 6-811, 6-812, 6-843 and 6-845. Each time the tenant changes, the Affected Property must pass a risk reduction lead inspection. To pass the inspection, the Affected Property must pass a lead-contaminated dust test, and ensure no paint is chipping, peeling, or flaking.

As a result, all children born on or after 1/1/15 must be tested for lead at ages 12 and 24 months.

Children enrolled in Medicaid are required to get tested for lead at ages 12 and 24 months, or age 24–72 months if they have no record of ever being tested. For children not enrolled in Medicaid, CDC recommends focusing testing efforts on high-risk neighborhoods and children. How is the testing done for lead poisoning?

A certificate shows that the property met Maryland standards for reducing lead hazards. Landlords need to perform “risk reduction treatments” at least once on a property, and every time a new tenant moves in (Maryland State Law, Environment Article §6-801 – 6-852).

A healthcare provider will test a child's blood for lead. During a blood lead test, a small amount of blood is taken from the finger, heel, or arm and tested for lead. A finger-prick or heel-prick (capillary) sample is usually the first step to determine if a child has lead in their blood.

It originally covered only houses built before 1950, but recently was expanded to include houses built up until 1978, when the federal government banned lead paint.

In October 2021, CDC lowered the blood lead reference value (BLRV) to 3.5 micrograms per deciliter (µg/dL) to identify children with higher levels of lead in their blood compared to most children. Capillary screening results at or above 3.5 μg/dL should be confirmed with blood drawn by venipuncture.