Marion is a medical laboratory scientist certified by the American Society for Clinical Pathology.  She also has a Masters degree in Clinical Laboratory Management and completed a specialist in blood banking certificate program. She has many years experience in the blood transfusion service in the U.S and in Trinidad and Tobago. In addition to the work done at Trinity she is an adjunct immunohaematology lecturer and provides non technical and technical advice to persons in need of blood, medical laboratory technologists respectively.