Clinical laboratory services means the biological, microbiological, serological, chemical, immunohematological, hematological, biophysical, cytological, pathological, or other examination of materials derived from the human body for the purpose of providing information for the diagnosis, prevention, or treatment of a disease or impairment of a human being, or for the assessment of the health of a human being, including procedures to determine, measure, or otherwise describe the presence or absence of various substances or organisms in the body.