New requirements for blood lead testing of young children: By law, Michigan now requires blood lead testing for all children at 12 months and 24 months of age and at other intervals based on exposure risk. This approach is commonly called “universal blood lead testing”. It is the physician’s responsibility to test or order the test.
The law updates the Public Health Code, adding MCL 333.5474d and amending MCL 333 9206(1). Administrative rules (R 330.301-304) for implementation of the law were made official on April 30, 2025.
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A blood lead test is a test that measures the amount of lead in the blood. During a blood lead test, a small amount of blood is taken from the finger or arm and is tested for lead. There are two types of blood lead tests:
A capillary test uses blood from a finger-prick and is often used as the first step or screening test to determine if a child has lead in their blood. Capillary blood samples can produce higher results if lead on the skin is captured in the sample. For this reason, a capillary test that shows a blood lead level at or above the CDC's blood lead reference value should be followed by a venous test to confirm that the level is elevated.
A venous test uses blood from a vein in a person's arm. It is the most accurate of the two tests. This type of test can take a few days to provide results.
An elevated blood lead level is defined by the "blood lead reference value (BLRV)". The BLRV identifies children with blood lead levels that are higher than most children's levels, based on data from a national survey. The federal BLRV is 3.5 micrograms per deciliter.
Blood lead test tube Lead is an invisible threat that is found throughout our environment. A blood lead test can tell you if you or your loved ones have recent or ongoing exposures to lead. A blood lead test cannot tell you whether you or your loved ones had exposures in the past.
Blood lead testing is particularly important for young children and pregnant persons because exposure to lead early in life has been shown to cause problems with learning, behavior, hearing, and growth. Learn more about lead and health.
Lead exposure is preventable. The key is stopping children from coming into contact with lead.
Michigan now requires blood lead testing of all young children at specified ages and with selected lead exposure risk factors. The requirements
include:
The amount of lead in blood is measured in micrograms per deciliter. A blood lead level of 3.5 micrograms per deciliter or greater is elevated. An elevated blood lead level is a level that is higher than most children's levels, based on data from a national survey.
If a person has an elevated blood lead level, the goals are to:
Your local health department and your health care provider can connect you with resources to accomplish these goals.
For questions about blood lead testing, call the MDHHS Childhood Lead Poisoning Prevention Program at 517-335-8885 or email them at MDHHS-CLPPP@michigan.gov.
Talking with healthcare provider Talk to your health care provider about blood lead testing. If you do not have a healthcare provider, contact your local health department to discuss where to get a blood lead test in your community.
To learn about blood lead testing data for your community, visit the MiTracking data.
If you need help navigating the data portal, here is a basics tutorial video.
