DNA and RNA extraction from low amount of blood volume

Clinical and research-based tests in molecular biology require a substantial amount of DNA and RNA, unfortunately, a considerable number of cells is needed for this amount of sample. Blood is one of the best and easiest source of cells, but is not used due to its invasive drawing methods and the needed volume. Another considerable point is the low amount of samples detected in crime scenes. TRI reagent is one of the most available methods for DNA, RNA and protein extraction. However, based on unsuccessful results, this method has not been widely used on blood samples. In this study, for the first time, the use of TRI reagent on micro scale blood volume was reported, resulting in high yield of DNA and RNA with great quality.