Fluorescent in situ hybridization (FISH) assays are available for a range of molecular analysis applications. SureFISH probes can detect aberrations in regions of the genome as small as 50 kb as well as aberrations near highly repetitive regions. They provide high resolution and rapid hybridization times and are designed to enable users to meet American College of Medical Genetics guidelines for clinical cytogenetics. SureFISH probes are Class I analyte specific reagents.