Which type of microorganisms will the lab technician examining Larry's blood count look for if Larry's doctor suspects malaria? Larry felt extremely feverish and sick when he returned to the United States after spending a week in a tropical climate. He had been bitten by many mosquitoes while in the tropics. His doctor suspects malaria. One diagnostic test for malaria involves determining the pathogen count in the patient’s blood. The lab technician examining Larry’s blood will look for , which are the microorganisms that cause malaria.