1.3 Reference Materials Flashcards
Highly purified chemicals that can be measured directly to produce a substance of exact known concentration
Primary standard
Primary standard are also known as?
a. Control
b. Blank
c. Calibrators
c
If the BUN Standard is 10 mg/dl, which of the following is accurate?
a. 11 mg/dl
b. 10 mg/dl
c. 9 mg/dl
d. any of the choices
b
The concept of using Primary standard is that the concentration of this should be read exactly from the machine, example:
in the box for BUN standard is 10 mg/dl, the machine should also read 10 mg/dl
Primary standard indicates the true value or accurate value that is being read from the machine base on the value given from that reagent box or guidelines
T or F
T
Primary standard indicates:
a. Precision
b. Accuracy
b
Substance of lower purity
Secondary standard
When using secondary standard, there should always be primary standard
T or F
T
If you are using primary standard, there should always be secondary standard
T or F
F
Primary standard is suffice
Represents a specimen that is similar in composition to the patient’s whole blood or plasma
Control
In control, the Value is unknown
T or F
F
Known
COntrol is a substance prepared by using a pooled s___
sera
Control is used to m_______ stability of a test system with pre-determined limits
monitor
Control is used for Quality control of the analyzer
T or F
F
Quality Assessment
Quality control monitors overall __________ of laboratory results
a. Precise
b. Accurate
c. Reliability
c
Two divisions in Quality control:
- Analysis of Control samples
a. Internal
b. External
a
Two divisions in Quality control:
- Statistical analysis
a. Internal
b. External
a
Two divisions in Quality control:
- Proficiency testing
a. Internal
b. External
b
Two divisions in Quality control:
- NEQAS (National external quality assurance scheme)
a. Internal
b. External
b
Two divisions in Quality control:
- Instrument maintenance
a. Internal
b. External
a
Control:
Normal and pathologic
a. 2 levels
b. 3 levels
a
Control:
Low, normal, high
a. 2 levels
b. 3 levels
b
Control:
All / Majority of test
a. 2 levels
b. 3 levels
a
Control:
Blood gases
a. 2 levels
b. 3 levels
b
Control:
Therapeutic drugs
a. 2 levels
b. 3 levels
b
