STRASINGER - CHAPTER 3: Introduction to Urinalysis

The primary inorganic substance found in urine is:

A. Sodium

B. Phosphate

C. Chloride

D. Calcium

C.

An unidentified fluid is received in the laboratory with a request to determine whether the fluid is urine or another body fluid. Using routine laboratory tests, which substances would determine that the fluid is most probably urine?

A. Glucose and ketones

B. Urea and creatinine

C. Uric acid and amino acids

D. Protein and amino acids

B.

The average daily output of urine is:

A. 200 mL

B. 500 mL

C. 1200 mL

D. 2500 mL

C.

A patient presenting with polyuria, nocturia, polydipsia,

and a low urine specific gravity is exhibiting symptoms of:

A. Diabetes insipidus

B. Diabetes mellitus

C. Urinary tract infection

D. Uremia

A.

A patient with oliguria might progress to having:

A. Nocturia

B. Polyuria

C. Polydipsia

D. Anuria

D.

All of the following are characteristics of recommended urine containers except:

A. A flat bottom

B. A capacity of 50 mL

C. A snap-on lid

D. Are disposable

C.

Labels for urine containers are:

A. Attached to the container

B. Attached to the lid

C. Placed on the container before collection

D. Not detachable

C.

A urine specimen may be rejected by the laboratory for all of the following reasons except the fact that the:

A. Requisition form states the specimen is catheterized

B. Specimen contains toilet paper

C. Label and requisition form do not match

D. Outside of the container has contamination from fecal

material

A.

A cloudy specimen received in the laboratory may have been preserved using:

A. Boric acid

B. Chloroform

C. Refrigeration

D. Formalin

C. 

For general screening, the specimen collected most frequently is a:

A. Random one

B. First morning

C. Midstream clean-catch

D. Timed

A. 

The primary advantage of a first morning specimen over a random specimen is that it:

A. Is less contaminated

B. Is more concentrated

C. Is less concentrated

D. Has a higher volume

B. 

If a routine urinalysis and a culture are requested on a catheterized specimen, then:

A. T wo separate containers must be collected

B. The routine urinalysis is performed first

C. The patient must be recatheterized

D. The culture is performed first

D.

If a patient fails to discard the first specimen when collecting a timed specimen, then the:

A. Specimen must be re-collected

B. Results will be falsely elevated

C. Results will be falsely decreased

D. Both A and B

D.

The primary cause of unsatisfactory results in an unpreserved routine specimen not tested for 8 hours is:

A. Bacterial growth

B. Glycolysis

C. Decreased pH

D. Chemical oxidation

A. 

Prolonged exposure of a preserved urine specimen to light will cause:

A. Decreased glucose

B. Increased cells and casts

C. Decreased bilirubin

D. Increased bacteria

C.

Which of the following would be least affected in a specimen that has remained unpreserved at room temperature for more than 2 hours?

A. Urobilinogen

B. Ketones

C. Protein

D. Nitrite

C.

Bacterial growth in an unpreserved specimen will:

A. Decrease clarity

B. Increase bilirubin

C. Decrease pH

D. Increase glucose

A.

The most sterile specimen collected is a:

A. Catheterized

B. Midstream clean-catch

C. Three-glass

D. Suprapubic aspiration

D.

Which of the following would not be given to a patient before the collection of a midstream clean-catch specimen?

A. Sterile container

B. Iodine cleanser

C. Antiseptic towelette

D. Instructions

B.

Urine specimen collection for drug testing requires the collector to do all of the following except:

A. Inspect the specimen color

B. Perform reagent strip testing

C. Read the specimen temperature

D. Fill out a chain-of-custody form

B.