Biological sample preservation on paper

摘要

The invention discloses a cellulose or glass fibre paper for preservation of biological samples, which comprises 4 40 30 wt % of a hydrophilic braned carbohydrate polymer. The polymer may be Ficoll (RTM) or dextran, either of which may be bound to the surface such as by reaction with epichlorohydrin. Also disclosed is a method for preservation of biological samples such as dried blood spots or proteins by applying and drying them on the paper.