Pearly 4 Flashcards
The primary reagent in the reagent strip test for ketones is:
a. glycine
b. sodium nitroprusside
c. sodium hydroxide
d. lactose
-sodium nitroprusside
Which of the following the principles is that of the protein-high pad on the reagent strip?
a. Microalbumin-Micral-test
b. Protein error of indicators
c. Diazo reaction
d. Enzymatic dye-binding reaction
-Protein error of indicators
Which of the following reagent strip reactions requires the longest time?
a. Glucose
b. Bilirubin
c. pH
d. Leukocyte esterase
-Leukocyte esterase
Failure to mix a specimen before inserting the reagent strip will primarily affect the following reading?
a. glucose reading
b. Both blood and leukocyte reading
c. leukocyte reading
d. blood reading
-Both blood and leukocyte reading
What is the principle of the reagent strip test for pH?
a. griess reaction
b. double indicator
c. dissociation of a polyelectrolyte
d. protein error of indicators
-b. double indicator
Testing a refrigerated specimen that has not warmed to room temperature will adversely affect which of the following reactions?
a. Enzymatic reactions
b. The sodium nitroprusside reaction
c. Diazo reactions
d. Dve-binding reactions
-Enzymatic reactions
What is the principle of the reagent strip test for protein?
a. griess reaction
b. double indicator
c. dissociation of a polyelectrolyte
d. protein error of indicators
d. protein error of indicators
ll of the following conditions will cause false-positive protein reagent strip values except:
a. Microalbuminuria
b. delay in removing the reagent strip
from the specimen
c. contamination by quaternary
ammonium compounds
d. highly buffered alkaline urines
-Microalbuminuria
Which of the following reagent strip test is most significantly associated with a positive ketone result.
a. protein
b. ph
c. glucose
d. specific gravity
c. glucose
Quality control of reagent strips is performed
a. at least once every 24 hours
b. all of the above
c. using positive and negative controls
d. when results are questionable
-all of the above
What is the principle of the reagent strip test for glucose
a. Dye-binding of glucose and chromogen
b. Glucose oxidase reaction
c. Double sequential enzyme reaction
d. Peroxidase activity of glucose
-Double Sequential enzyme reaction
Ketonuria may be caused by all of the following except.:
a. vomiting
b. diabetic acidosis
c. starvation
d. bacterial infections
bacterial infections
All of the following substance/conditions may not produce false-negative glucose reactions?
a. Unreserved specimens
b. Detergent contamination
c. Ascorbic acid
d. Low urine temperature
-Detergent contamination
All of the following actions is not important to protect to integrity of reagent strips ?
a. resealing the bottle after removing a strip
b. Removing the desiccant from the bottle
c. storing at room temperature
d. storing in an opaque bottle
removing the desIccant rom the bottle
The principle of the reagent strip test for blood is based on the following activities?
a. reaction of peroxide and chromogen b. peroxidase activity of heme
c. Binding of heme and chromogenic dye d. diazo activity of heme
-peroxidase activity of heme
Which of the following will happen if excess urine if left on reagent strin after removing it from the specimen?
a. cause reagents to leach from the pads
b. cause runover between reagent pads
c. not affect the chemical reactions
d. alter the color of the specimen
-cause runover between reagent pads
