Hematology is the field of Medicine that is concerned with conditions of the BLOOD and/or BONE MARROW.

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The functions of our blood include

  1. Supply of oxygen & nutritients to the whole body
  2. Regulation of blood clotting & bleeding
  3. Immunity & healing
Every single organ in the body depends on blood. Blood is essential for life. Hence, Hematological disorders can affect virtually every organ in the body. And vice versa, almost every medical condition can have direct or indirect effects on the blood and/or bone marrow.

We look healthy and good because our Blood and Immune System constantly nourish, protect, heal and repair our bodies.

Take care of your Blood and Immune System, and your Blood and Immune System will take care of you.

Dr Gerrard Teoh - MBBS, MMed(IntMed), FAMS(Haem)

Dr Teoh is a Hematologist, i.e. he specializes in treating Hematological disorders. He has >30 years of experience working as a doctor. He previously worked in the field of Immunohematology* for 3+ years at the Division of Hematologic Malignancies, Dana-Farber Cancer Institute, Harvard Medical School, Boston, USA. He is also well-qualified in dealing with general medical as well as Internal Medicine (i.e. adult medicine) problems.


This is the field of Hematology that focuses on the Immune System. The Immune System is the body's mechanism for defense & healing. The study of Immunohematology includes the study of Antibodies, Allergies and Autoimmunity; and also Immune System cancers, e.g. Multiple Myeloma.

Scope of Practice

  1. General Medicine
  2. Basic Hematology and Internal Medicine (Adult Medicine)
  3. Advanced Hematology