Presumptive and Confirmatory Tests

Which test is used to detect invisible blood stains?

• Kastle-Meyer
• Luminol
• Precipitin
• Huminal

Which test is used to determine if a blood sample is human?

• Kastle-Meyer
• Luminol
• Precipitin
• Huminal

Which reagent test turns dark green or blue green when blood is detected?

• Kastle-Meyer or phenolphthalein

• HemaStix

• Luminol

• Fluorescein

Which reagent test glows blue when blood is detected?

• Kastle-Meyer or phenolphthalein

• HemaStix

• Luminol

• Fluorescein

Which are widely used blood search reagents?

• Luminol
• Bluestar
• Phenothalein
• Luminol and Bluestar

The determination of whether or not a substance is blood is best made by means of a preliminary color test such as the Kastle-Meyer color test, which uses the chemical: 

• precipitin. 
• phenolphthalein. 
• p30. 
• benzidine.

What are the two types of tests used to determine if an evidence sample is actually blood?

• Presumptive
• Confirmatory
• Both presumptive and confirmatory
• Neither presumptive or confirmatory

Kastle- Meyer is a presumptive test for blood that turns bright blue in the presence of hemoglobin.

• True

• False