Quiz 1 Flashcards
safety features built into the overall design
of a product
a. Work practice control
b. Engineering control (correct )
c. Emergency equipment
d. PPE
Convert 1 uL to dL?
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
The absorbance of a solution does not increase as its concentration increase
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
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
b. Reagent blank
The ff. measure trace metals except
Turbidimetry
Oxidation reactions of luminol, acridinium esters, and dioxetanes which create rapid increase in intensity of emitted light followed by a gradual decay?
Chemiluminiscence
Feedback
Emission of light is created from a chemical or electrochemical reaction. No excitation radiation, no monochromator
True about electrophoresis
Proteins will stop migrating when it reached the isoelectric point
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
Reagent blank
The ff. measure trace metals except
Turbidimetry
The gold standard for drug testing?
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
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
Amperometry
True about control except
Reference material with known concentration of analyte
Using resin to selectively removed ions, its product is ideal for electrolyte study?
Deionization
How to derive the equivalence from grams?
Divide the gram molecular weight by its (the compound) valence
Most popular and versatile analyzer –measures only the tests requested on a sample
Discrete
All but one is incorrect?
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
To confirm a that a pipet needs “blow out”, one must look for
Two thin rings near the mouthpiece of the pipet
Commonly used in verification of pipette calibration?
Water
Fume hood is a necessity for every clinical chemistry lab . It is the only safe place to
The gold standard for drug testing?
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
All but one is incorrect?
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)
Variation according to sleeping and waking times
Diurnal
The major concern in specimen collection
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
Analyte that increases in strenuous exercise that can be life threatening
Potassium
Why does lactate increase during exercise? *
• a. Low oxygen during exercise diverts metabolic pathway
to anaerobic metabolism
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?
Multiply the diluted specimen value to the
reciprocal of dilution
Feedback
100 mq/dL (diluted specimen value) × 5 (reciprocal of dilution) =
500 mg/dL
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?
d. Compute the difference between the measured osmolality and the calculated osmolality
- *compute for the osmolal gap
The predominant designation for temperature that 1/1 is adopted by the SI?
Kelvin
Feedback
The SI designation for temperature is the Kelvin scale
- The predominant practice for temperature measurement uses the Celsius
X Certifies laboratories to conduct forensic drug
testing?
SAMHSA
Hearing protection (earplugs or earmuffs) *
Emergency equipment
Pico is
b. 10-9
Measurement of assay at two different wavelength
Bichromatic analysis
