The FLARE Sample Prep (slides, lysis solution and low melt agarose) are for use with the FLARE Modules, enzyme and buffers for FLARE, Fragment Length Analysis using Repair Enzymes, detecting DNA damage in single cells using E. coli formamidopyrimidine-DNA glycosylase (Fpg) with single cell gel electrophoresis for DNA damage from mutagens, drugs, Fpg catalyzes the excision of the following forms of DNA damage:opening from 7-methylguanine, including 2,6-diamino-4-hydroxy-5-N-methylformamido-pyrimidine, and 4,6-diamino-5-formamidopyimidine, 8- OHdG, 4-HNA or oxoguaninelesions 5-hydroxycytosine and 5-hydroxyuracil, Aflatoxin-bound imidazole-ring-opened guanine, Imidazole ring opened N-2-aminofluorene-C8-guanine. The FLARE slides are then immersed in an alkali solution, to unwind and denature the DNA strands prior to alkali gel electrophoresis.