‘We are overlooked and essential.’ Inside U-M’s COVID testing lab Meredith Bruckner, Community News Producer, All About Ann Arbor Published: Updated: Tags: The microbiology department at Michigan Medicine's lab on North Campus. (Cheryl Kubisiak) ANN ARBOR – Each year, the US marks Medical Laboratory Professionals Week during the last week of April to recognize the critical role lab workers play in keeping health care systems running. Now more than ever, lab technologists around the country -- and world -- are working tirelessly to deliver results for constant COVID testing. Medical technologist in Michigan Medicine’s microbiology department, Cheryl Kubisiak, said that COVID completely transformed their day-to-day routine.