The authors have reported previously on the use of the Luminol reagent to detect blood in soil up to two years following deposition of the blood. Recently, one of the authors (Gabel) inquired about a revisit to the research site to further test the study grids with both the Luminol and Blue Star reagents. The initial study began in October of 2004. A total of six 2’x 2’ grids were created in which 500ml of blood was poured in an “X” pattern. The original study was designed to last two years, the results of which were previously published.

(As this article does not contain an abstract, this abstract was created by editing the introduction.)