Testing for SCIDĪll Texas newborns get two blood tests that screen for 29 congenital disorders and point-of-service screenings for hearing and critical congenital heart disease. There are several different forms of SCID. An altered gene, passed to the baby from one or both parents, is associated with many forms of SCID. However, sometimes the SCID gene shows up for the first time in the newborn without being passed down from a parent (spontaneous occurrence). In most instances of infants born with SCID there are no other known cases of SCID in the family. Unless there has already been a baby born with SCID in the family, there is no way for a couple to know who is at risk to carry a gene that causes SCID. SCID is a disorder caused by changes in genes involved in immune function that are passed on (inherited) from parents to child. One or both parents of an affected child carry a gene change that can cause SCID. Parents usually do not have signs or symptoms, or even know they carry the gene change. Babies with SCID are not able to fight infection. They appear healthy at birth but can become sick very quickly when exposed to common illnesses. SCID is so rare that medical providers might not diagnose it until it is too late to provide lifesaving treatment. SCID is a rare, serious group of disorders involving the immune system. The immune system is composed of T and B lymphocytes or (T and B cells), the white blood cells that are responsible for fighting infections caused by viruses, bacteria and fungi. SCID will be detected using the same newborn screen specimen collected from a heel stick and tested at the Texas Department of State Health Services Laboratory. If not treated, most of the affected infants die within the first year of life. Although rare, SCID can be successfully treated if identified early in life. It can occur in about one in 40,000 to one in 100,000 newborns. SCID is one of the most serious and life-threatening forms of immune system problems. SCID is a group of genetic disorders characterized by profound defects in the immune system, the body’s line of defense against all types of infections. The Department of State Health Services began screening for Severe Combined Immunodeficiency (SCID) on December 1, 2012.
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