rationale

Question 1

identify the type of light:

shortest wavelength but highest energy

Answer 1

ultraviolet

Question 2

identify the type of light:

longest wavelength but lowest energy

Answer 2

infrared

Question 3

range of visible light

Answer 3

400-700nm

Question 4

identify the wavelength used

caraway method for uric acid

Answer 4

650-700nm

(+) tungsten blue - visible light

Question 5

identify the wavelength used

uricase method for uric acid

enzymatic method

Answer 5

293nm

ultraviolet

Question 6

identify the wavelength used

dubowski reaction for glucose

orthotoluidine/condensation method

Answer 6

620-730nm

(+) bluish green - visible light

Question 7

identify the wavelength used

LDH method

Answer 7

340nm

ultraviolet light

Question 8

identify the wavelength used

cyanmethemoglobin method

Answer 8

540nm

visible light

Question 9

identify the wavelength used

bilirubin in amniotic fluid

Answer 9

OD450nm

visible light (test for HDN)

Question 10

In nephelometry, what scatter measures size/volume?

Answer 10

forward scatter

Question 11

In nephelometry, what scatter measures internal cell complexity?

granularity and lobularity

Answer 11

side scatter

Question 12

measures blocked light

Answer 12

turbidimetry

Question 13

light source for visible-IR light range

Answer 13

tungsten-halogen (iodide) lamp

Question 14

an aspect of QA that is used to assess analytical phase of patient testing

Answer 14

quality control

Question 15

anticoagulant preferred for erythrocyte osmotic fragility and electrolytes testing

Answer 15

heparin

Question 16

color of citrate anticoagulant cap for ESR testing

Answer 16

black

3.8% anticoagulant (1:4)

Question 17

photolabile analytes

Answer 17

bilirubin and CK

Question 18

cold-labile analytes

Answer 18

LD4 and LD5

stored at RT

Question 19

an indicator of precision

Answer 19

standard deviation

Question 20

relative indicator of precision

Answer 20

coefficient of variation

Question 21

test to evaluate accuracy

Answer 21

t-test

Question 22

test to evaluate precision

Answer 22

f-test

Question 23

serum pool or pooled sera; material of known value that is analyzed with patient samples to determine acceptability of results

Answer 23

control

Question 24

sudden or abrupt change in the data

Answer 24

shift

Question 25

gradual deviation in the data

Answer 25

trend

Question 26

Fluorometers are designed so that the path of the exciting light is at the right angle to the path of the emitted light. What is the purpose of this design?

Answer 26

prevent loss of emitted light

Question 27

Lamp that may be described as containing **argon** and having the element of interest coated on its cathode?

Answer 27

tungsten lamp

Question 28

In addition to utilizing Levey Jennings charts, what other criteria should be applied to interpret internal quality control data?

Answer 28

westgard multirule

Question 29

refers to the measure of **scatter** of experimental data around the mean of a Gaussian (normal) distribution curve?

Answer 29

standard deviation

Question 30

What term describes the extent of agreement between **repeated analyses**?

Answer 30

precision

Question 31

refers to the deviation from the true value caused by **indeterminate errors** inherent in every laboratory measurement?

Answer 31

random error

Question 32

closeness with which the **measured value agrees with the true value**

Answer 32

accuracy

Question 33

describes the ability of an analytical method to **maintain both accuracy and precision** over an extended period of time?

Answer 33

reliability