Fragile X syndrome is the most common known cause of inherited mental
retardation. Identification of patients and carriers of fragile X synd
rome is usually done with a DNA test system but we have developed a ra
pid antibody to identify fragile X patients. This non-invasive test re
quires only 1 or 2 drops of blood and can be used for screening large
groups of mentally retarded people and neonates for fragile X syndrome
.