CLT Exam
Questions and Answers
(Verified)
1. Which of the following statements is true
?: At minimum two levels of control should be tested daily for each
test run in the laboratory.
2. When comparing an instrument to its peer group, which statistic
provides the most useful information regrind its ACCURACY
: SDI- standard deviation index
3. When comparing an instrument to its peer group, which statistic
provides the most useful description of OVERALL IMPRECISION
: CVR
1/
,4. 2(2s)
: Detects systematic error
5. 1(3s)
: Detects rondom error
6. If the light source on an instrument is gradually weakening, it
could contribute to what type of error
?: Systematic error
7. If you change reagent on the instrument and your control results demon-
strates a sudden and consistent increase in value, this phenomena is
: A shift in performance due to systematic error
8. If one of two control values within a single test run is between 2s and
3s on the positive side, you should
2/
,: Accept the run if no error can be detected
9. Dilution
: Decrease concentration by adding water/solvent
10.Solute
: Substance being dissolved
11.Solvent
: The substance in which the solute dissolves in
12.Ratio
: Comparison of solute to solvent
13.Example of ratios to dilutions (3/27)
3/
,: Dilution- 1/9 Dilution factor- 9
Serum needed to make
dilution- 1 Saline needed to
make dilution- 8
14.Tube dilution
: Dilution ratio in that tube alone
15.Solution dilution
: Actual concentration of the solvent in each tube (dependent on the
previous dilutions)
16.Final concentration
: The solution dilution of the last tube
17.%w/w
: (Unit weights of solute = grams of solute) / (100 ml of solution = 1dL
of solution)
4/
, 18.%w/v
: (Grams of solute = grams of solute) / (100 mL of solution = 1 dL
of solution)
5/
Questions and Answers
(Verified)
1. Which of the following statements is true
?: At minimum two levels of control should be tested daily for each
test run in the laboratory.
2. When comparing an instrument to its peer group, which statistic
provides the most useful information regrind its ACCURACY
: SDI- standard deviation index
3. When comparing an instrument to its peer group, which statistic
provides the most useful description of OVERALL IMPRECISION
: CVR
1/
,4. 2(2s)
: Detects systematic error
5. 1(3s)
: Detects rondom error
6. If the light source on an instrument is gradually weakening, it
could contribute to what type of error
?: Systematic error
7. If you change reagent on the instrument and your control results demon-
strates a sudden and consistent increase in value, this phenomena is
: A shift in performance due to systematic error
8. If one of two control values within a single test run is between 2s and
3s on the positive side, you should
2/
,: Accept the run if no error can be detected
9. Dilution
: Decrease concentration by adding water/solvent
10.Solute
: Substance being dissolved
11.Solvent
: The substance in which the solute dissolves in
12.Ratio
: Comparison of solute to solvent
13.Example of ratios to dilutions (3/27)
3/
,: Dilution- 1/9 Dilution factor- 9
Serum needed to make
dilution- 1 Saline needed to
make dilution- 8
14.Tube dilution
: Dilution ratio in that tube alone
15.Solution dilution
: Actual concentration of the solvent in each tube (dependent on the
previous dilutions)
16.Final concentration
: The solution dilution of the last tube
17.%w/w
: (Unit weights of solute = grams of solute) / (100 ml of solution = 1dL
of solution)
4/
, 18.%w/v
: (Grams of solute = grams of solute) / (100 mL of solution = 1 dL
of solution)
5/
