Podcast
Questions and Answers
Which of the following is NOT a step in searching for an unknown blood stain?
Which of the following is NOT a step in searching for an unknown blood stain?
- Identifying the location of the stain
- Analyzing the stain using a microscope (correct)
- Determining the type of blood stain
- Collecting the stain using a clean swab or cloth
During the collection of an unknown blood stain, what is the recommended tool to use?
During the collection of an unknown blood stain, what is the recommended tool to use?
- A plastic bag
- A clean swab or cloth (correct)
- A dirty cloth
- A used swab
What is the first step in analyzing an unknown blood stain?
What is the first step in analyzing an unknown blood stain?
- Analyzing the stain using a microscope
- Identifying the location of the stain (correct)
- Collecting the stain using a clean swab or cloth
- Determining the type of blood stain
Which collection method is commonly used to collect an unknown blood stain from a porous surface?
Which collection method is commonly used to collect an unknown blood stain from a porous surface?
Which presumptive test is used to determine if a stain is likely to be blood?
Which presumptive test is used to determine if a stain is likely to be blood?
Which confirmatory test is used to definitively identify the presence of human blood in a stain?
Which confirmatory test is used to definitively identify the presence of human blood in a stain?
Explain the process of searching for an unknown blood stain.
Explain the process of searching for an unknown blood stain.
Describe the types of collection methods used for unknown blood stains.
Describe the types of collection methods used for unknown blood stains.
What are the steps involved in analyzing an unknown blood stain?
What are the steps involved in analyzing an unknown blood stain?
Explain the process of searching for an unknown blood stain.
Explain the process of searching for an unknown blood stain.
What are the types of collection methods used for unknown blood stains?
What are the types of collection methods used for unknown blood stains?
Describe the presumptive and confirmatory testing methods used for analyzing unknown blood stains.
Describe the presumptive and confirmatory testing methods used for analyzing unknown blood stains.
Which of the following is NOT a collection method commonly used for unknown blood stains?
Which of the following is NOT a collection method commonly used for unknown blood stains?
Which of the following is a presumptive test used to determine if a stain is likely to be blood?
Which of the following is a presumptive test used to determine if a stain is likely to be blood?
Which of the following is a confirmatory test used to definitively identify the presence of human blood in a stain?
Which of the following is a confirmatory test used to definitively identify the presence of human blood in a stain?
Study Notes
Searching for an Unknown Blood Stain
- The first step in searching for an unknown blood stain is to visually observe and document the area.
- It is recommended to use a magnifying glass or an alternative light source to aid in the search.
Collecting an Unknown Blood Stain
- The recommended tool to use for collecting an unknown blood stain is a sterile swab or a clean, moist cotton cloth.
- The collection method used for unknown blood stains from a porous surface is the swabbing method.
- Other collection methods used for unknown blood stains include the scraping method, lifting method, and cutting method.
Analyzing an Unknown Blood Stain
- The first step in analyzing an unknown blood stain is to perform a presumptive test.
- The presumptive test used to determine if a stain is likely to be blood is the Kastle-Meyer (KM) test or the Phenolphthalein (PP) test.
- The confirmatory test used to definitively identify the presence of human blood in a stain is the Ouchterlony or the DNA analysis.
- The steps involved in analyzing an unknown blood stain include: presumptive testing, confirmatory testing, and DNA analysis.
Types of Testing
- Presumptive testing methods used for analyzing unknown blood stains include the Kastle-Meyer (KM) test and the Phenolphthalein (PP) test.
- Confirmatory testing methods used for analyzing unknown blood stains include the Ouchterlony and DNA analysis.
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Description
Test your knowledge on searching for, collecting, and analyzing unknown blood stains. Learn about the essential steps and recommended tools involved in the process.
