Skip to main content

Michigan Chemical Exposure Monitoring (MiChEM)

MiChEM is a statewide biomonitoring project focused on a representative sample of Michigan adults. MDHHS will look at the blood and urine of these adults for certain chemicals. The project aims to find the statewide average level of exposure to these chemicals.


  • MDHHS aims to recruit Michigan adults from different census tracts that we select each year between 2022-2023.

  • A population is an entire group of people. A sample is a part of the population. A representative sample is a group that closely matches the traits of its population as a whole. MDHHS is using a representative sample because it is not possible to test the entire population.

  • No. Participants must be selected using a specific process to create a representative sample.  We cannot take volunteers for the project.

  • The MiChEM project is testing for the following chemicals. Some are tested in blood; some are tested in urine; some are tested in both blood and urine.

    • Metals such as:
      • Lead
      • Mercury
      • Arsenic
      • Aluminum  
      • Manganese
      • Chromium
      • Selenium
      • Thallium  
      • Cadmium
    • Organochlorine pesticides
    • Per- and polyfluoroalkyl substances (PFAS)
    • Polybrominated biphenyl – 153 (PBB-153)
    • Polybrominated diphenyl ethers (PBDEs)
    • Polychlorinated biphenyls (PCBs)