Quiz 1

Question 1

safety features built into the overall design
of a product

Answer 1

a. Work practice control
b. Engineering control (correct )
c. Emergency equipment
d. PPE

Question 2

Convert 1 uL to dL?

Answer 2

deci – 10-1 or 0.1
micro – 10-6 or 0.000 001
bawasan mo lang ang 10-6 ng isa which is 10-5 or 0.000 01
a. 1 X 10-5(correct)
b. 1 X 10-6
c. 1 X 10-4
d. 1 X 10-3

Question 3

The absorbance of a solution does not increase as its concentration increase

Answer 3

b. There is a loss of linearity due to stray light

Stray light limits the maximum absorbance that a spectrophotometer can achieve
Stray light is the MOST COMMON cause of LOSS OF LINEARITY

Question 4

Contains the same reagents used for the test; adjust the spectrophotometer to 100% (or 0 absorbace); the instrument automatically subtract the color contributed by the reagent from each reading. Thus correcting color contribution of the reagents

Answer 4

b. Reagent blank

Question 5

The ff. measure trace metals except

Answer 5

Turbidimetry

Question 6

Oxidation reactions of luminol, acridinium esters, and dioxetanes which create rapid increase in intensity of emitted light followed by a gradual decay?

Answer 6

Chemiluminiscence

Feedback

Emission of light is created from a chemical or electrochemical reaction. No excitation radiation, no monochromator

Question 7

True about electrophoresis

Answer 7

Proteins will stop migrating when it reached the isoelectric point

Question 8

Contains the same reagents used for the test; adjust the spectrophotometer to 100% (or 0 absorbace); the instrument automatically subtract the color contributed by the reagent from each reading. Thus correcting color contribution of the reagents

Answer 8

Reagent blank

Question 9

The ff. measure trace metals except

Answer 9

Turbidimetry

Question 10

The gold standard for drug testing?

Answer 10

The sample is volatilized, then separates the various components of the sample based on size and/or polarity. The separated components then go into a mass selective detector

Question 11

What method is being described: When oxygen (oxidant) diffuses to the membrane, it will accept electron from a reducing agent (electron donor), thus the flow of electron corresponding the O2 concentration is being measured

Answer 11

Amperometry

Question 12

True about control except

Answer 12

Reference material with known concentration of analyte

Question 13

Using resin to selectively removed ions, its product is ideal for electrolyte study?

Answer 13

Deionization

Question 14

How to derive the equivalence from grams?

Answer 14

Divide the gram molecular weight by its (the compound) valence

Question 15

Most popular and versatile analyzer –measures only the tests requested on a sample

Answer 15

Discrete

Question 16

All but one is incorrect?

Answer 16

a. Re-spinning of tubes after transferring the serum of plasma to another tube
b. Speed testing of centrifuge every quarter
c. Weekly disinfection of the centrifuge
d. NOTA

Question 17

To confirm a that a pipet needs “blow out”, one must look for

Answer 17

Two thin rings near the mouthpiece of the pipet

Question 18

Commonly used in verification of pipette calibration?

Answer 18

Water

Question 19

Fume hood is a necessity for every clinical chemistry lab . It is the only safe place to

Question 20

The gold standard for drug testing?

Answer 20

O a. It uses pressure for fast separation of substances
• b. It separates according to charge and not size
c. The sample is volatilized, then separates the © various components of the sample based on size and or polarity. The separated components then go into a mass selective detector (answer)
• d. It measures light scatter by a particle in a solution

Question 21

All but one is incorrect?

Answer 21

a. Re-spinning of tubes after transferring the serum of X
plasma to another tubeb.
b.Speed testing of centrifuge every quarter
c. Weekly disinfection of the centrifuge
d. NOTA(answer)

Question 22

Variation according to sleeping and waking times

Answer 22

Diurnal

Question 23

The major concern in specimen collection

Answer 23

a. Chain of custody © b. Patient identification
• c. Sample identification
• d. Diurnal variation

Answer : B

Feedback
ABC - are all major concerns in specimen collection, but the order is Patient ID, Sample ID, and COC

Question 24

Analyte that increases in strenuous exercise that can be life threatening

Answer 24

Potassium

Question 25

Why does lactate increase during exercise? *

Answer 25

• a. Low oxygen during exercise diverts metabolic pathway
to anaerobic metabolism

Question 26

A specimen for glucose is diluted 1:5. The value of 1/1 the diluted specimen is 100 mg/dL. What should be done to correct the dilution?

Answer 26

Multiply the diluted specimen value to the
reciprocal of dilution

Feedback
100 mq/dL (diluted specimen value) × 5 (reciprocal of dilution) =
500 mg/dL

Question 27

Electrolytes, glucose, BUN, creatinine, and osmolality examinations been performed on a patient suspected of ingesting ethanol. What can be done to help reveal this condition without additional tests?

Answer 27

d. Compute the difference between the measured osmolality and the calculated osmolality
- *compute for the osmolal gap

Question 28

The predominant designation for temperature that 1/1 is adopted by the SI?

Answer 28

Kelvin

Feedback
The SI designation for temperature is the Kelvin scale
- The predominant practice for temperature measurement uses the Celsius

Question 29

X Certifies laboratories to conduct forensic drug
testing?

Answer 29

SAMHSA

Question 30

Hearing protection (earplugs or earmuffs) *

Answer 30

Emergency equipment

Question 31

Pico is

Answer 31

b. 10-9

Question 32

Measurement of assay at two different wavelength

Answer 32

Bichromatic analysis