Texas Occupations Code - OCC § 166.001. Definition

(1) histopathology or surgical pathology, which is the gross and microscopic examination and histologic processing of organ tissue performed by a physician or under the supervision of a physician;

(2) cytopathology, which is the microscopic examination of cells from the following:

(3) hematology, which is the microscopic evaluation of bone marrow aspirates and biopsies performed by a physician, or under the supervision of a physician, and peripheral blood smears when the attending or treating physician or technologist requests that a blood smear be reviewed by a pathologist;

(4) sub-cellular pathology and molecular pathology;  or

(5) a blood-banking service performed by a pathologist.