Book: Chemical Examination Flashcards
Leaving excess urine on the reagent strip after removing
it from the specimen will:
A. Cause run-over between reagent pads
B. Alter the color of the specimen
C. Cause reagents to leach from the pads
D. Not affect the chemical reactions
Cause run-over between reagent pads
Failure to mix a specimen before inserting the reagent
strip will primarily affect the:
A. Glucose reading
B. Blood reading
C. Leukocyte reading
D. Both B and C
Both B and C
Testing a refrigerated specimen that has not warmed to room temperature will adversely affect:
A. Enzymatic reactions
B. Dye-binding reactions
C. The sodium nitroprusside reaction
D. Diazo reactions
Enzymatic reactions
The reagent strip reaction that requires the longest reaction time is the:
A. Bilirubin
B. pH
C. Leukocyte esterase
D. Glucose
Leukocyte esterase
Quality control of reagent strips is performed:
A. Using positive and negative controls
B. When results are questionable
C. At least once every 24 hours
D. All of the above
All of the above
All of the following are important to protect the integrity of reagent strips except:
A. Removing the desiccant from the bottle
B. Storing in an opaque bottle
C. Storing at room temperature
D. Resealing the bottle after removing a strip
Removing the desiccant from the bottle
The principle of the reagent strip test for pH is the:
A. Protein error of indicators
B. Greiss reaction
C. Dissociation of a polyelectrolyte
D. Double indicator reaction
Double indicator reaction
A urine specimen with a pH of 9.0:
A. Indicates metabolic acidosis
B. Should be recollected
C. May contain calcium oxalate crystals
D. Is seen after drinking cranberry juice
Should be recollected
In the laboratory, a primary consideration associated
with pH is:
A. Identifying urinary crystals
B. Monitoring vegetarian diets
C. Determining specimen acceptability
D. Both A and C
Both A and C
Indicate the source of the following proteinurias by placing a 1 for prerenal, 2 for renal, or 3 for postrenal in front of the condition.
A. ____Microalbuminuria
B. ____Acute phase reactants
C. ____Pre-eclampsia
D. ____Vaginal inflammation
E. ____Multiple myeloma
F. ____Orthostatic proteinuria
G. ____Prostatitis
2
1
2
3
1
2
3
The principle of the protein error of indicators reaction
is that:
A. Protein keeps the pH of the urine constant
B. Albumin accepts hydrogen ions from the indicator
C. The indicator accepts hydrogen ions from
albumin
D. Albumin changes the pH of the urine
Albumin accepts hydrogen ions from the indicator
All of the following will cause false-positive protein
reagent strip values except:
A. Microalbuminuria
B. Highly buffered alkaline urines
C. Delay in removing the reagent strip from the specimen
Microalbuminuria
A patient with a 2+ protein reading in the afternoon is asked to submit a first morning specimen. The second specimen has a negative protein reading. This patient is:
A. Positive for orthostatic proteinuria
B. Negative for orthostatic proteinuria
C. Positive for Bence Jones protein
D. Negative for clinical proteinuria
Positive for orthostatic proteinuria
Testing for microalbuminuria is valuable for early detection of kidney disease and monitoring patients with:
A. Hypertension
B. Diabetes mellitus
C. Cardiovascular disease risk
D. All of the above
All of the above
The primary chemical on the reagent strip in the Micral-Test for microalbumin binds to:
A. Protein
B. Antihuman albumin antibody
C. Conjugated enzyme
D. Galactoside
Antihuman albumin antibody
All of the following are true for the ImmunoDip test for
microalbumin except:
A. Unbound antibody migrates farther than bound
antibody
B. Blue latex particles are coated with antihuman
albumin antibody
C. Bound antibody migrates further than unbound
antibody
D. It utilizes an immunochromographic principle
Unbound antibody migrates farther than bound
antibody
The principle of the protein-high pad on the Multistix
Pro reagent strip is the:
A. Diazo reaction
B. Enzymatic dye-binding reaction
C. Protein error of indicators
D. Microalbumin-Micral-Test
Protein error of indicators
Which of the following is not tested on the Multistix Pro
reagent strip?
A. Urobilinogen
B. Specific gravity
C. Creatinine
D. Protein-high
Urobilinogen
The principle of the protein-low reagent pad on the Multistix Pro is the:
A. Binding of albumin to sulphonphthalein dye
B. Immunologic binding of albumin to antibody
C. Reverse protein error of indicators reaction
D. Enzymatic reaction between albumin and dye
Binding of albumin to sulphonphthalein dye