Thomas McDonald, MD

Clinical Pathologist / Laboratory Medicine Pathologist

Dr. Thomas McDonald is a Clinical Pathologist / Laboratory Medicine Pathologist in Valencia, CA with special training and skill in chemistry, microbiology, and immunology. As a Clinical Pathologist / Laboratory Medicine Pathologist, Thomas McDonald, MD performs diagnostic tests on bodily fluids and tissue samples. Clinical Pathology / Laboratory Medicine is the use of laboratory tests to treat and prevent disease. Significant diseases and conditions treated by Clinical Pathologists / Laboratory Medicine Pathologists include infections, diabetes, and cancer. Medical tests, procedures and therapies provided by Clinical Pathologists / Laboratory Medicine Pathologists include blood test, urine tests, and bone marrow biopsies.

A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.