These two important pieces of information need to be recorded about each piece of evidence prior to its collection.
What is the location and shape/state of the evidence
100
This type of evidence originates from the cells of human skin.
What is biological evidence
100
This category of technique is often times used in combination with category C technique during preliminary testing.
What is category B technique
100
This category of technique is often used in combination with category B technique during confirmatory testing.
What is category A technique
100
Name the 4 spectroscopic techniques for category A
What is raman, infrared, mass, and nuclear magnetic spectroscopy
200
All chemical corrosives require these two precautions during collection.
What are special containers and sealing
200
A type of evidence includeing drug powders and medications.
What is chemical evidence?
200
The most commonly identified drug usingmicroscopic identification.
What is marijuana?
200
Instead of a layer of silica used in TLC, what does high pressure liquid chromatography utilize?
What is a column packed with silica spheres?
200
A form of spectroscopy that is at best able to identify a compound to a drug class
What is Ultraviolet spectroscopy?
300
This fast and inexpensive type of testing can actually be performed right at the scene of a crime, but is often times not reliable.
What is a preliminary color test
300
Fingerprints, gunshot residues, hairs, material fibers, soils, and paint chips are all examples of this type of evidence. (Any evidence collected at the crime scene)
What is trace evidence?
300
True or False: Color tests allow for presumptive inclusion of certain drug classes and are able to exclude a drug class.
What is False? Color tests allow for presumptive inclusion of certain drug classes, but only serve as an INDICATOR and is NOT able to exclude a drug class.
300
What phase uses a hydrophilic stationary phase and a lipophilic mobile phase?
What is normal phase?
300
A method using energy of lower frequency than visible light.
What is infrared spectroscopy?
400
True or False: All color tests change color in the presence of a drug/substance.
What is False. (Some may change color in the absence of a drug/substance. This is important to counsel customers on.)
400
Because of the risk of disease transmission, biological evidence is always considered this.
What is a (biological) hazard
400
What test is usually a strip test kit or plate test that allows relatively high throughput of a sample volume?
What is immunoassay/antibody test kits (ELISA or RIA)?
400
What test uses a pure drug sample that is mixed with a reagent and then slowly dried under a microscope and the formation of crystals is observed?
What is microcrystalline tests?
400
A spectroscopic technique that does not use radiofrequency or light emittance.
What is mass spectroscopy?
500
After testing the evidence, it usually takes this many days to receive the results.
What is 3-4 days
500
These two bodily substances are classified as both biological AND chemical evidence.
What is blood and urine?
500
True or False: Ultraviolet-visible spectroscopy is able to quantify and detect compounds BUT with limited specificity.
What is True?
500
Name 2 reasons why reversed phase is often preferred over normal phase.
What is reversed phase allows for fine tuning of the pH (modifications in buffer and solvent) and gives a shorter run time
500
A confirmatory spectroscopic technique most commonly used in healthcare with diagnostic imaging.