- MedicineNet: Neutropenia - Presents the causes, normal and abnormal white blood cell counts, and conditions associated with the disorder.
- Neutropenia OnLine - Register, become a member and participate in a forum about this disorder.
- Neutropenia Support Association - An extensive look at this disorder with information about the blood, the causes, the different types, symptoms and the treatment.
- Severe Chronic Neutropenia International Registry - A disease registry which was established in Australia, Canada, the European Community and the United States in March, 1994. Information for patients and families and health care providers.