Review Exam 2

Question 1

Beers law is

Answer 1

Cs At/As x Cu

Relationships between concentration and absorbance. Absorption of visible light by compound concentration

Question 2

Types of electrochemistry

Answer 2

Amperometry, conductometry, resistivity, impedance, voltammetry, coulometry

Question 3

During migration of charged dilutes/particles in an electrical field-

Answer 3

Proteins have a NEG charge

Question 4

Batch analyzers are

Answer 4

Designed to perform a sign analysis on a large batch of specimen. (Loads of specimens/one tests)

Question 5

Random access

Answer 5

Flexibility by selecting test to be performed on a given patient sample. Reagent needed for test are stored on the instrument

Question 6

Throughput

Answer 6

Number of tests/hour or specimens/hour

Question 7

Preanalytical

Answer 7

Sample or specimen processing

Question 8

Post analytical

Answer 8

Data processing, qc and result reporting

Question 9

Advantages of automated analysis

Answer 9

Reduced errors, reduced tat, reduced costs, improved precision and accuracy, fewer repetitive stress injuries

Question 10

Bi-directional. Test are completed and uploaded to the lis

Answer 10

To be performed are downloaded to the analyzer through the lab info system (LIS).

Question 11

Mean is

Answer 11

Arithmetic average

Add then divide

Question 12

Mode is

Answer 12

Number used most frequently

Question 13

Parameter

Answer 13

Population number

Question 14

Confidence intervals

Answer 14

Normal or ref ranges. 95% confidence level

Question 15

Random error

Answer 15

Unpredictable and related to imprecision or variability

Question 16

Systematic error (bias)

Answer 16

Values consistently low or high. Poor calibration

Question 17

Proportional error

Answer 17

Increases as the concentration of the Analytes increases

Question 18

Diagnostic sensitivity

Answer 18

Ability of a test to detect a disease  or condition in patients who have that disease.
 True positive (tp/tp+fn)

Question 19

Diagnostic specificity

Answer 19

Ability of a test to detect the absence of disease in orient who do not have disease. 
False beg (tn/tn+fp)

Question 20

Levey - Jennings control charts

Answer 20

Charts used to plot daily qc data (monthly)

Question 21

Westgard multi rule procedures

Answer 21

Rules applied to qc data to determine whether the run can be accepted or rejected

Question 22

3 stages of statistical qc program

Answer 22

Establish control ranges, observe daily qc data, take action when rules are violated

Question 23

A delta check is

Answer 23

Procedure in which a tech compares 2 consecutive lab results on a patient auto validate. Comparing patients ref range results

Question 24

Fire class A

Answer 24

Ordinary combustible materials (paper wood plastic cloth)

Question 25

Fire class B

Answer 25

Flammable combustible (liquids gases grease)

Question 26

Fire class C

Answer 26

Energized electrical equipment

Question 27

Fire class D

Answer 27

Combustible metals (magnesium titanium sodium)

Question 28

Chemical hazards colors

Answer 28

Also comes with numbers 0-4 (deadlious)
Blue- Health hazard. 
Red- fire hazard 
Yellow- radioactivity 
White- special hazards (acid, radiation)

Question 29

Patient demographics

Answer 29

Patients name, sex, dob, patient number, ref physican, admitting diagnosis

Question 30

Calibrators are

Answer 30

A known concentration