Machines And +- Flashcards
1
Q
Disadvantages of urine sampling (4)
A
- Observed collection can be seen as an infringement of privacy
- Difficult to interpret
- Mostly metabolites
- Easily adulterated
2
Q
Advantages of Urine Sampling (5)
A
- Easy to collect and analyse
- Large volumes available
- Inexpensive
- Can be screened directly
- History of drug use can be seen
3
Q
Advantages of Blood sampling (3)
A
- Indicates recent use
- Hard to adulterated
- Easily interpreted
4
Q
Disadvantages of blood sampling (4)
A
- Requires trained personnel to collect
- Low concentrations of drugs
- Requires specialised lab
- Costly
5
Q
Advantages of sweat sampling (2)
A
- Non-invasive
2. Easy to collect
6
Q
Disadvantages of sweat sampling (3)
A
- Not widely used
- Expensive
- Difficult to interpret
7
Q
Advantages of saliva sampling (4)
A
- Easy to collect
- Tested on site
- Hard to adulterate
- Recent use for non-smoked drugs
8
Q
Disadvantages to saliva sampling (3)
A
- Limited sample size
- Can have low concentrations
- Complex to interpret
9
Q
Advantages to hair sampling (4)
A
- History of drug use (several months)
- Stable for years
- Non-invasive
- Good for heavy metals
10
Q
Disadvantages of hair sampling (4)
A
- Prone to contamination
- Expensive to analyse
- Hair has to have grown for 10 days after drug use for results to be seen
- Limited interpretation
11
Q
What does Dille-Koppanyi test for and what colour does it turn?
A
- barbiturates
- purple
12
Q
What does the Mandelin test test for and what colour does it turn?
A
- amphetamines
- yellow
13
Q
What does the Marquis test test for and what colour does it turn? (2)
A
- Opiates
- purple
- Amphetamines
- Dark Purple to Yellow
14
Q
What does the Meckes test test for and what colour does it turn?
A
- amphetamines
- methamphetamines
- Dark green to dark blue
15
Q
HPLC (2)
A
- Sample injected onto silica column
- mix separated and components detected
