Presumptive Blood Tests

These presumptive blood tests are designed to be a simple one shot test for the presence of blood. This portable test will fi t in your pocket and allows you to test suspect stains without taking the time to mix chemicals. Simply place a small quantity of the stained material or a portion of a swabbing of the stain into the kit and crush the color-coded vials in sequence. Their formulation has long been accepted by the courts and proven in the fi eld. These kits will automatically let you know if it has expired thus minimizing the chance of a negative reading. > More

Phenolphthalein is one of the most commonly used chemicals in the fi eld and laboratory to indicate the presence of blood. Our prepackaged kit contains all the reagents and supplies to conduct a presumptive blood test. There is a “known” sample to let the user know the kit is working. Packaged in a plastic box. > More

Many investigators use this reagent as a confi rmatory test after the Phenolphthalein Presumptive Blood Test. A positive presumptive result yields a blue color. Packaged in a plastic box with all the necessary premixed chemicals and supplies to conduct a O-Tolidine Blood Test. The premixed chemicals are packaged in plastic dropper bottles. A known blood standard is included to monitor the results. > More

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. > More