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Flint resident Grant Porter, 5, watches as his mother Ardis Porter, 26, has her blood drawn for lead testing at the Flint Masonic Temple in this 2016 Flint Journal file photo.

(Conor Ralph | MLive.com)

FLINT, MI -- The Michigan Department of Health and Human Services is checking with federal agencies to determine the extent to which certain lead tests that may provide inaccurate results were used in Flint.

The Centers for Disease Control and Prevention and the Food and Drug Administration announced Wednesday, May 17, that certain tests manufactured by Magellan Diagnostics "may provide inaccurate results for some children and adults in the United States."

The tests have been in use since 2014, the start of Flint's lead in water crisis, during which blood testing for adults and children concerned about lead exposure was common here.

The CDC recommended in a news release that parents of children younger than 6 years of age, and currently pregnant women and nursing mothers who have been tested for lead exposure consult a health care professional about whether they should be retested.

The statement says the tests in question are used for blood drawn from a vein rather than a finger prick.

Jennifer Eisner, a spokeswoman for the state DHHS, said the department is working with the CDC to determine how many test results from Flint may be impacted.

MLive-The Flint Journal could not immediately reach the Genesee County Health Department for comment.

The FDA's news release says the Magellan lead tests, when performed on blood drawn from a vein, "may provide results that are lower than the actual level of lead in the blood."