Leucocrystal Violet Presumptive Blood Test
Many investigators use this highly sensitive test a confirmatory test after the Phenolphthalein Presumptive Blood Test. A positive presumptive result yields a deep blue color. Packaged in a plastic box with all the necessary premixed chemicals and supplies to conduct a Leucocrystal Violet Blood Test. The premixed liquid reagents are packaged in plastic dropper bottles. A known blood standard is included to monitor the results.