DNA profiling of bloodstains on linen pretreated with remedies used for cleaning and maintaining clothes

Summary Linen was pretreated with 20 remedies for cleaning and maintaining clothes and 20 l blood was applied on each sample and dried. Restriction enzyme digest of bloodstain DNA was irregularly inhibited by highly concentrated residues of 2 detergents and a stainremover and colour-brightener. An additional dialysis step to purify DNA (Gill 1987) reliably prevented disturbance. High molecular DNA was obtained in every case and bandshifts were not observed.