UA Test Bank

nitrites

A 21 y/o visited her doctor. She mentioned dysuria, frequency, and urgency of urination to her doctor. Which of the following UA reagent strip tests would you expect to be positive for this patient, based on her symptoms?

QC should be performed on the new lot of chemical strips as soon as they are needed for testing in the laboratory

A new lot of UA chemical reagent strips is received in the laboratory. When should QC be performed on the new strips?

alkaline pH

A patient that is on a vegetarian diet will most likely have an:

bilirubin

A patient whose diagnosis is hepatitis, may have which of the following tests positive on a urine reagent strip?

granulocytes

A positive leukocyte esterase test indicates the presence of which of the following, in a urine specimen?

hemoglobinuria

A reagent strip test for hemoglobin has been reported positive. Microscopic examination fails to yield RBCs. The patient's urine condition can be called:

one hour

A semen sample for semen analysis should generally be received at the testing site within what period of time?

HDFN

A spectrophotometric scan of amniotic fluid may be valuable in the determination of which of the following conditions?

lyse the RBCs

A technologist is having trouble differentiating between RBCs, oil droplets, and yeast cells on a urine microscope slide. Acetic acid should be added to the sediment to:

diabetes

A test for microalbuminuria is used most often to monitor patients with which of the following diseases or conditions?

3+ RBCs

All of the following UA findings may correlate with the presence of a yeast infection, EXCEPT:

lymphocytes

All of the following WBCs would produce a positive leukocyte esterase test, EXCEPT:

protein

All of the following formed elements may be present in urine sediment and can be identified microscopically, EXCEPT:

remove the cap of the test strip bottle and leave it off until testing is completed

All of the following statements are TRUE regarding storing and handling of urine reagent strips if you are using a manual method, EXCEPT:

reagent strips should be immersed in centrifuged urine specimens only

All of the following statements are true for the UA strip procedure, EXCEPT:

when visually reading the reagent strip, all test results can be read immediately after dipping the strip in the urine specimen

All of the following statements are true regarding the reagent strip test procedure, EXCEPT:

fetal lung maturity

An L/S ratio of 2.0 or higher in amniotic fluid indicates:

1500 mL

An average adult would excrete approximately what volume of urine per 24 hours?

9,000 mL enters; 150 mL exits

Approximately how much liquid enters the intestines each day, and how much exits in the feces?

37 weeks

At what gestational age does the volume of amniotic fluid typically reach 800-1200 mL?

room temperature

At what temperature should the urine be prior to testing with the reagent strip method?

within 1 hour

Cell counts of CSF specimens should be performed within what time frame following the collection of a CSF sample?

yeast cells

Cells seen in the microscopic examination of the urine of a 30 y/o female, which are smaller than RBCs, but much the same shape, are probably:

amorphous urates and calcium oxalate

Common crystals which can be found in acidic urine, include:

bacterial infection

Detection of a fruity odor in a fresh urine sample may be indicative of all of the following EXCEPT:

biliary obstruction

Fecal urobilinogen level may be markedly decreased because of:

brown/black

Homogentisic acid in urine will cause urine to be which of the following colors?

by measuring Na and K levels

How is fecal osmolality calculated for differentiating secretory and osmotic diarrhea?

positive for bilirubin

How should the production of a blue or purple color on the test pad of an Icotest be interpreted?

yeast

In a patient with acute glomerulonephritis, you would expect to find all of the following in the urine, EXCEPT:

presence of hidden blood in the stool

In the context of fecal analysis, what does a positive guaiac-based occult blood test indicate?

Shigell spp.

Normal fecal specimens contain all of the following EXCEPT:

following a low-impact exercise routine

Significantly increased levels of ketones are typically detected in the urine with all of the following conditions, EXCEPT:

fat

Sudan III will confirm the presence of:

fetal lung maturity

The L/S ratio is used to assess:

methyl red and bromothymol blue

The indicator(s) used in the pH test region of the chemical reagent strips used for urine are:

acetoacetic acid

The ketone component that is measured by the nitroprusside reaction is:

urethra

The nephron includes all of the following, EXCEPT:

detect metabolic by-products often seen in diabetic patients

The nitrite portion of the test strip can be used to do all of the following, EXCEPT:

4.5 to 8.0

The normal range for urine pH is:

concentration at which a substance in the RBCs spills into the urine

The renal threshold is best described as:

greater than 100 WBCs/hpf

The sediment from a freshly collected urine specimen is examined microscopically. In addition to bacteria, what other finding from the list below would further indicate the presence of a UTI?

10-15 mL

The volume of urine recommended for centrifugation for a microscopic examination, is:

1 hour

To determine if xanthochromia is present in a CSF, the sample must be centrifuged within:

lactose intolerance

What condition is indicated by undigested carbohydrates in the stool?

invasive or inflammatory condition of the intestinal wall

What does the presence of WBCs in the feces usually indicate?

invasive or inflammatory conditions

What does the presence of mucus in feces typically indicate?

pale, greasy, and foul smelling

What is a common feature of feces in steatorrhea?

high glucose content

What is a key distinguishing feature of amniotic fluid compared to normal urine?

UTI

What is the MOST probable condition when a clean-catch urine specimen gave these results? Visual: cloudy, amber pH: 5.0 SG: 1.015 Protein: 1+ Glucose: negative Occult blood: trace Nitrite: positive Microscopic readings: many bacteria, 30-40 WBC/hpf

transabdominally

What is the most common method of collecting amniotic fluid for analysis?

differentiation between fetal and maternal blood in a newborn's stool

What is the primary purpose of the Apt test?

copper reduction principle

What is the principle behind the Clinitest tablet test for fecal carbohydrates?

upper GI bleeding

What is the significance of finding dark or black stools in a patient?

neutrophils

What type of WBCs are seen MOST frequently in urine sediments with infections of the urinary system?

With each new lot of reagent strips and every day of patient testing

When an automated or semi-automated method is used to read urine chemical reagent strips, QC testing must be performed at least how often?

Queenan chart

Which chart is used to evaluate the severity of HDFN from 14-40 weeks' gestation?

pale or clay colored

Which color changes in feces is typically due to posthepatic obstructions?

use of a well-mixed, uncentrifuged sample at room temperature is the technique for urine reagent strips

Which of the following answer choices correctly states the use of urine reagent strips for chemical analysis?

fibers

Which of the following artifacts may be mistaken for casts?

lymphocytes

Which of the following cells would be increased in the CSF of a patient with suspected MS (multiple sclerosis)?

blood is evenly distributed in all tubes

Which of the following characteristics of CSF is present, if blood is due to a SAH (subarachnoid hemorrhage)?

multiple sclerosis

Which of the following conditions is most likely when an oligoclonal band is seen in CSF electrophoresis without a corresponding serum peak?

estimation of maternal hormone levels

Which of the following is NOT a reason for performing amniocentesis?

diagnosing DM

Which of the following is NOT a use of fecal analysis?

fecal fat quantification

Which of the following is a definitive test for steatorrhea?

formed, cylindrical masses

Which of the following is a typical characteristic of normal feces?

protect the fetus while enabling movement

Which of the following is the primary function of amniotic fluid?

the urine chemical reagent strip method is not affected by the presence of x-ray contrast media in the urine specimen

Which of the following statements is TRUE for specific gravity measured by the urine chemical reagent strip method?

the reagent strop method is based on the relationship between ionic concentration and specific gravity

Which of the following statements is true for specific gravity measured by the reagent strip method?

remove only enough strips for immediate use

Which of the following statements is true regarding the storage and handling of UA chemical reagent strips?

PG test

Which of the following tests for fetal lung maturity is least affected by blood or meconium contamination?

Urobilinogen

Which of the following tests included on a UA reagent strip would never be reported as "negative"?

quantitative fecal fat

Which of the following tests requires a 72-hour fecal collection?

it is the protein that is predominantly detected by a urine reagent strip test

Which one of the following statements concerning the Tamm-Horsfall protein is FALSE?

L/S ratio

Which test for fetal lung maturity involves measuring the concentration of phospholipids in amniotic fluid?

Guaiac-based test

Which test for occult blood in feces is based on the psuedoperoxidase activity of hgb?