Leucomalachite Green is a triphenylmethane dye used to detect blood. A method for testing for the presence of leucomalachite green utilizing SDS-modified maghemite nanoparticles (γ-Fe(2)O(3)) has been described. Other studies have reported various protocols useful for determining the presence of Leucomalachite green in aquatic biological systems. Leucomalachite Green is a triphenylmethane dye used to detect blood. A method for testing for the presence of leucomalachite green utilizing SDS-modified maghemite nanoparticles (γ-Fe(2)O(3)) has been described. Other studies have reported various protocols useful for determining the presence of Leucomalachite green in aquatic biological systems.