Females who have a disease gene present on one X chromosome are carriers of that disorder. [rarediseases.org]

Clinical Testing and Workup Blood tests will be ordered to determine the status of immunoglobulins in the blood, including normal or high levels of IgM and low levels of other immunoglobulin classes. [rarediseases.org]

You may also want to contact a university or tertiary medical center in your area, because these centers tend to see more complex cases and have the latest technology and treatments. [rarediseases.info.nih.gov]

Standard Therapies Treatment The treatment of hyper IgM syndromes is directed toward the specific symptoms that are apparent in each individual. Treatment may require the coordinated efforts of a team of specialists. [rarediseases.org]

Immunology: Clinical Case Studies and Disease Pathophysiology. John Wiley & Sons. ISBN 9781118966006. Retrieved 27 November 2016. Kleinman, Ronald (Professor of Paediatrics (2008). Walker's Pediatric Gastrointestinal Disease. PMPH-USA. [en.wikipedia.org]

Platelets are specialized blood cells that help prevent and stop bleeding. [rarediseases.org]