The ABI PRISM® 3100-Avant Genetic Analyzer is a 4 capillary electrophoresis instrument for automated DNA sequencing and genotyping. The machine is upgradable to 16-capillaries for medium throughput automation. Labor intensity is reduced with automated polymer and sample loading and easy-to-use tools to visualize data analysis. It automatically injects samples into the 4 to 16 capillary arrays, and unlike slab-gel systems, minimal amounts of DNA are needed for accurate analysis. The 3100 analyzer sequences up to 72,000 bases or provides thousands of genotypes in 24 hours.