MICROANATOMY

BLOOD CARDIOVASCULAR SYSTEM LYMPHOID ORGANS

BLOOD

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which test is used to detect invisible blood stains?
A
Kastle-Meyer
B
Luminol
C
Precipitin
D
Huminal
Explanation: 

Detailed explanation-1: -The forensic luminol test has long been valued for its ability to detect trace amounts of blood that are invisible to the naked eye. This is the first quantitative study to determine the effect on the luminol test when an attempt is made to clean bloodstained tiles with a known interfering catalyst (bleach).

Detailed explanation-2: -Scientists can take advantage of the luminol reaction to locate potential blood evidence that would be undetectable through visual examination.

Detailed explanation-3: -Forensic investigators use luminol to detect trace amounts of blood at crime scenes, as it reacts with the iron in hemoglobin. Biologists use it in cellular assays to detect copper, iron, cyanides, as well as specific proteins via western blotting.

Detailed explanation-4: -This article examines forensic investigators use of luminol in the detection of blood, the preparing of the solution, the application and documentation, and the training with luminol. Luminol is a water-based solution capable of detecting blood that has been diluted up to 10, 000 times.

Detailed explanation-5: -In 1942, a forensic scientist recommended the Luminol test for use in forensic blood detection. His research showed that the older the stain, the longer and more pronounced the luminescence. Luminol is highly sensitive to blood, convenient to use, and nondestructive to other forms of blood testing.

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