The quizzes about Chemical Examination of Urine (47 questions)

Leaving a reagent strip in the specimen for too long will:

Cause runover between reagent pads

Alter the color of the specimen

Cause reagents to leach from the pads

Not affect the chemical reactions

Correct! Wrong!

Failure to mix a specimen prior to inserting the reagent strip will primarily affect the:

Glucose reading

Blood reading

Nitrite reading

Ph reading

Correct! Wrong!

Testing a refrigerated specimen that has not warmed to room temperature will adversely affect:

Enzymatic reactions

Dye-binding reactions

The sodium nitroprusside reaction

Diazo reactions

Correct! Wrong!

The reagent strip reaction that requires the longest reaction time is the:

Bilirubin

Leukocyte esterase

Glucose

Correct! Wrong!

Quality control of reagent strips is performed:

Using positive and negative controls

When results are questionable

At least once every 24 hours

All of the above

Correct! Wrong!

All of the following are important to protect the integrity of reagent strips except:

Removing the desiccant from the bottle

Storing in an opaque bottle

Storing at room temperature

Resealing the bottle after removing a strip

Correct! Wrong!

The principle of the reagent strip test for pH is the:

Protein error of indicators

Greiss reaction

Dissociation of a polyelectrolyte

Double indicator reaction

Correct! Wrong!

A urine specimen with a pH of 9.0:

Is indicative of metabolic acidosis

Should be recollected

May contain calcium oxalate crystals

Is seen after drinking cranberry juice

Correct! Wrong!

In the laboratory, a primary consideration associated with pH is:

Identification of urinary crystals

Monitoring of vegetarian diets

Determination of specimen acceptability

Both A and C

Correct! Wrong!

The principle of the protein error of indicators reaction is that:

Protein changes the pH of the urine

Albumin accepts hydrogen ions from the indicator

The indicator accepts ions for albumin

Albumin changes the pH of the urine

Correct! Wrong!

All of the following will cause false-positive protein reagent strip values except:

Proteins other than albumin

Highly buffered alkaline urines

Delay in removing the reagent strip from the specimen

Contamination by quartenary ammonium compounds

Correct! Wrong!

A patient with a 1 protein reading in the afternoon is asked to submit a first morning specimen. The second specimen also has a 1 protein. This patient is:

Positive for orthostatic proteinuria

Negative for orthostatic proteinuria

Positive for Bence Jones protein

Negative for clinical proteinuria

Correct! Wrong!

Testing for microalbuminuria is valuable for monitoring patients with:

Hypertension

Diabetes mellitus

Cardiovascular disease risk

All of the above

Correct! Wrong!

All of the following are true for the Micral-Test for microalbumin except:

It is run on first morning specimens

It contains an antibody-enzyme conjugate

Two blue bands are formed on the strip

Unbound antibody attaches to immobilized albumin

Correct! Wrong!

All of the following are true for the Immunodip test for microalbumin except:

Unbound antibody migrates farther than bound antibody

Blue latex particles are coated with antibody

Bound antibody migrates further than unbound antibody

It utilizes an immumochromographic principle

Correct! Wrong!

The principle of the protein-low reagent pad on the Multistix Pro is the:

Binding of albumin to sulphonphtalein dye

Immunologic binding of albumin to antibody

Reverse protein error of indicators reaction

Enzymatic reaction between albumin and dye

Correct! Wrong!

The principle of the creatinine reagent pad on microalbumin reagent strips is the:

Double indicator reaction

Diazo reaction

Pseudoperoxidase reaction

Reduction of a chromogen

Correct! Wrong!

The purpose of performing an albumin:creatinine ratio is to:

Estimate the glomerular filtration rate

Correct for hydration in random specimens

Avoid interference for alkaline urines

Correct for abnormally colored urines

Correct! Wrong!

A patient with a normal blood glucose and a positive urine glucose should be further checked for:

Diabetes mellitus

Renal disease

Gestational diabetes

Pancreatitis

Correct! Wrong!

The principle of the reagent strip tests for glucose is the:

Peroxidase activity of glucose

Glucose oxidase reaction

Double sequential enzyme reaction

Dye-binding of glucose and chromogen

Correct! Wrong!

All of the following may produce false-negative glucose reactions except:

Detergent contamination

Ascorbic acid

Unpreserved specimens

Low urine temperature

Correct! Wrong!

A positive Clinitest and a negative reagent strip glucose are indicative of:

Low levels of glucose

Nonglucose reducing substances

High levels of glucose

Both A and B

Correct! Wrong!

The primary reason for performing a Clinitest is to:

Check for high ascorbic acid levels

Confirm a positive reagent strip glucose

Check for newborn galactosuria

Confirm a negative glucose reading

Correct! Wrong!

The three intermediate products of fat metabolism include all of the following except:

Acetoacetic acid

Ketoacetic acid

Beta-hydroxybutyric acid

Acetone

Correct! Wrong!

The most significant reagent strip test that is associated with a positive ketone result is:

Glucose

Protein

Specific gravity

Correct! Wrong!

The primary reagent in the reagent strip test for ketones is:

Glycine

Lactose

Sodium hydroxide

Sodium nitroprusside

Correct! Wrong!

Ketonuria may be caused by all of the following except:

Bacterial infections

Diabetic acidosis

Starvation

Vomiting

Correct! Wrong!

Urinalysis on a patient with severe back and abdominal pain is frequently performed to check for:

Glucosuria

Proteinuria

Hematuria

Hemoglobinuria

Correct! Wrong!

The principle of the reagent strip test for blood is based on the:

Binding of heme and a chromogenic dye

Peroxidase activity of heme

Reaction of peroxide and chromogen

Diazo activity of heme

Correct! Wrong!

A speckled pattern on the blood pad of the reagent strip indicates:

Hematuria

Hemoglobinuria

Myoglobinuria

All of the above

Correct! Wrong!

The principle of the reagent strip test for bilirubin is the:

Diazo reaction

Ehrlich reaction

Greiss reaction

Peroxidase reaction

Correct! Wrong!

An elevated urine bilirubin with a normal urobilinogen is indicative of:

Cirrhosis of the liver

Hemolytic disease

Hepatitis

Biliary obstruction

Correct! Wrong!

The primary cause of a false-negative bilirubin reaction is:

Highly pigmented urine

Specimen contamination

Specimen exposure to light

Excess conjugated bilirubin

Correct! Wrong!

The purpose of the special mat supplied with the Ictotest tablets is that:

Bilirubin remains on the surface of the mat.

It contains the dye needed to produce color.

It removes interfering substances.

Bilirubin is absorbed into the mat.

Correct! Wrong!

The reagent in the Multistix reaction for urobilinogen is:

A diazonium salt

Tetramethylbenzidine

p-dimethylaminobenzaldehyde

Hoesch reagent

Correct! Wrong!

The primary problem with urobilinogen tests using Ehrlich reagent is:

Positive reactions with porphobilinogen

Lack of sensitivity

Positive reactions with Ehrlich reactive substances

Both A and C

Correct! Wrong!

In the Watson-Schwartz differentiation test, the substance(s) not extracted into butanol is/are:

Urobilinogen

Porphobilinogen

Ehrlich reactive substances

Correct! Wrong!

The Hoesch test is used to monitor or screen patients for the presence of:

Urobilinogen

Nitrite

Porphobilinogen

Leukocyte esterase

Correct! Wrong!

The reagent strip test for nitrite used the:

Please select 2 correct answers

Greiss reaction

Hoesch reaction

Peroxidase reaction

Pseudoperoxidase reaction

Correct! Wrong!

All of the following can cause a negative nitrite reading except:

Gram-positive bacteria

Gram-negative bacteria

Random urine specimens

Heavy bacterial infections

Correct! Wrong!

A positive nitrite test and a negative leukocyte esterase test is an indication of a:

Dilute random specimen

Vaginal yeast infection

Specimen older than 2 hours

Correct! Wrong!

All of the following can be detected by the leukocyte esterase reaction except:

Neutrophils

Eosinophils

Lymphocytes

Basophils

Correct! Wrong!

Screening tests for urinary infection combine the leukocyte esterase test with the test for:

Nitrite

Protein

Blood

Correct! Wrong!

The principle of the leukocyte esterase reagent strip test uses a:

Peroxidase reaction

Double indicator reaction

Diazo reaction

Dye-binding technique

Correct! Wrong!

The principle of the reagent strip test for specific gravity uses the dissociation constant of a/an:

Diazonium salt

Indicator dye

Polyelectrolyte

Enzyme substrate

Correct! Wrong!

A specific gravity of 1.030 would produce the reagent strip color:

Blue

Green

Yellow

Red

Correct! Wrong!

Reagent strip–specific gravity readings are affected by:

Glucose

Radiographic dye

Alkaline urine

All of the above

Correct! Wrong!

The quizzes about Chemical Examination of Urine (47 questions)

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The quizzes about Chemical Examination of Urine (47 questions)

Leaving a reagent strip in the specimen for too long will:

Failure to mix a specimen prior to inserting the reagent strip will primarily affect the:

Testing a refrigerated specimen that has not warmed to room temperature will adversely affect:

The reagent strip reaction that requires the longest reaction time is the:

Quality control of reagent strips is performed:

All of the following are important to protect the integrity of reagent strips except:

The principle of the reagent strip test for pH is the:

A urine specimen with a pH of 9.0:

In the laboratory, a primary consideration associated with pH is:

The principle of the protein error of indicators reaction is that:

All of the following will cause false-positive protein reagent strip values except:

A patient with a 1 protein reading in the afternoon is asked to submit a first morning specimen. The second specimen also has a 1 protein. This patient is:

Testing for microalbuminuria is valuable for monitoring patients with:

All of the following are true for the Micral-Test for microalbumin except:

All of the following are true for the Immunodip test for microalbumin except:

The principle of the protein-low reagent pad on the Multistix Pro is the:

The principle of the creatinine reagent pad on microalbumin reagent strips is the:

The purpose of performing an albumin:creatinine ratio is to:

A patient with a normal blood glucose and a positive urine glucose should be further checked for:

The principle of the reagent strip tests for glucose is the:

All of the following may produce false-negative glucose reactions except:

A positive Clinitest and a negative reagent strip glucose are indicative of:

The primary reason for performing a Clinitest is to:

The three intermediate products of fat metabolism include all of the following except:

The most significant reagent strip test that is associated with a positive ketone result is:

The primary reagent in the reagent strip test for ketones is:

Ketonuria may be caused by all of the following except:

Urinalysis on a patient with severe back and abdominal pain is frequently performed to check for:

The principle of the reagent strip test for blood is based on the:

A speckled pattern on the blood pad of the reagent strip indicates:

The principle of the reagent strip test for bilirubin is the:

An elevated urine bilirubin with a normal urobilinogen is indicative of:

The primary cause of a false-negative bilirubin reaction is:

The purpose of the special mat supplied with the Ictotest tablets is that:

The reagent in the Multistix reaction for urobilinogen is:

The primary problem with urobilinogen tests using Ehrlich reagent is:

In the Watson-Schwartz differentiation test, the substance(s) not extracted into butanol is/are:

The Hoesch test is used to monitor or screen patients for the presence of:

The reagent strip test for nitrite used the:

All of the following can cause a negative nitrite reading except:

A positive nitrite test and a negative leukocyte esterase test is an indication of a:

All of the following can be detected by the leukocyte esterase reaction except:

Screening tests for urinary infection combine the leukocyte esterase test with the test for:

The principle of the leukocyte esterase reagent strip test uses a:

The principle of the reagent strip test for specific gravity uses the dissociation constant of a/an:

A specific gravity of 1.030 would produce the reagent strip color:

Reagent strip–specific gravity readings are affected by:

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