MLT ASCP Practice Questions: Urinalysis &
Body Fluids Test Banks With Solutions
Which of the following is not a standard method for measuring the specific gravity of urine:
A. Urine reagent strips
B. Freezing point depression
C. Refractometry
D. Hydrometry B;
Osmolality can be measured by freezing point depression, but not specific gravity as specified in
this question. The other methods are used to measure specific gravity in urine samples.
The normal range for urine pH is:
A. 4.6 to 8.0
B. 5.0 to 6.0
C. 5.5-6.6
D. 7.35-7.45 A;
Normal urine pH varies from 4.6 to 8.0. After meals, urine becomes more alkaline due to gastric
acid secretion (alkaline tide). At night due to shallow breathing, it becomes more acid. A high
,MLT ASCP Practice Questions: Urinalysis &
Body Fluids Test Banks With Solutions
meat diet results in a more acid urine than a vegetarian diet, due to excretion of phosphates and
sulfates.
Which two of the following crystalline elements are found in acid urine:
A. Cystine
B. Triple phosphate
C. Calcium phosphate
D. Tyrosine A & D;
Crystals and sediment found in acid urine include: cystine, leucine, calcium oxalate, sodium
urate, sulfonamide, tyrosine, uric acid, and amorphous urates.
False-positive tests for protein on a urine reagent strip may be caused by: (Choose ALL of the
correct answers)
A. Bacterial contamination
B. Urine that has remained at room temperature for an extended period of time
C. Alkaline medication
,MLT ASCP Practice Questions: Urinalysis &
Body Fluids Test Banks With Solutions
D. Ascorbic acid A-C;
Bacterial contamination, urine that has remained at room temperature for an extended period of
time, and the presence of alkaline medication are all factors which can cause false positives on
the protein pad of a urine reagent strip.
Bence-Jones proteinuria can be seen in all of the following conditions except:
A. Amyloidosis
B. Nephrotic syndrome
C. Multiple myeloma
D. Macroglobulinemia B;
Bence-Jones proteins are monoclonal light chains excreted in the urine, seen with multiple
myeloma, and other neoplasms of lymphoid cells. Small amounts can be missed by urine
dipsticks, which are more sensitive to albumin than globulins. They are best detected by urine
protein electrophoresis, immunoelectrophoresis, or immunofixation. Large amounts cause renal
tubular damage, resulting in myeloma kidney. Bence-Jones proteins have unusual heat solubility
properties, in that they precipitate between 50- 60 degrees C and redisolve at 90 -100 degrees C.
Historical detection methods often utilized this unusual property.
, MLT ASCP Practice Questions: Urinalysis &
Body Fluids Test Banks With Solutions
T/F:
The crystals that are seen in this image are calcium oxalate. False; These are leucine
crystals.
Identify the urine sediment elements shown by the arrow:
A. Cholesterol crystals
B. Uric acid crystals
C. Amorphous urate crystals
D. Cystine crystals D;
Cystine crystals are characteristically seen as colorless hexagonal plates in acid urine. They may
be confused with hexagonal uric acid crystals. They can be differentiated from uric acid by their
solubility in dilute hydrochloric acid versus crystalline uric acid, which is not soluble in dilute
hydrochloric acid. The cyanide-nitroprusside test can be used to confirm the presence of cystine
in urine. Cystine crystals are not present in normal urine.
An average adult would excrete approximately what volume of urine per 24 hours:
A. 3000 ml
Body Fluids Test Banks With Solutions
Which of the following is not a standard method for measuring the specific gravity of urine:
A. Urine reagent strips
B. Freezing point depression
C. Refractometry
D. Hydrometry B;
Osmolality can be measured by freezing point depression, but not specific gravity as specified in
this question. The other methods are used to measure specific gravity in urine samples.
The normal range for urine pH is:
A. 4.6 to 8.0
B. 5.0 to 6.0
C. 5.5-6.6
D. 7.35-7.45 A;
Normal urine pH varies from 4.6 to 8.0. After meals, urine becomes more alkaline due to gastric
acid secretion (alkaline tide). At night due to shallow breathing, it becomes more acid. A high
,MLT ASCP Practice Questions: Urinalysis &
Body Fluids Test Banks With Solutions
meat diet results in a more acid urine than a vegetarian diet, due to excretion of phosphates and
sulfates.
Which two of the following crystalline elements are found in acid urine:
A. Cystine
B. Triple phosphate
C. Calcium phosphate
D. Tyrosine A & D;
Crystals and sediment found in acid urine include: cystine, leucine, calcium oxalate, sodium
urate, sulfonamide, tyrosine, uric acid, and amorphous urates.
False-positive tests for protein on a urine reagent strip may be caused by: (Choose ALL of the
correct answers)
A. Bacterial contamination
B. Urine that has remained at room temperature for an extended period of time
C. Alkaline medication
,MLT ASCP Practice Questions: Urinalysis &
Body Fluids Test Banks With Solutions
D. Ascorbic acid A-C;
Bacterial contamination, urine that has remained at room temperature for an extended period of
time, and the presence of alkaline medication are all factors which can cause false positives on
the protein pad of a urine reagent strip.
Bence-Jones proteinuria can be seen in all of the following conditions except:
A. Amyloidosis
B. Nephrotic syndrome
C. Multiple myeloma
D. Macroglobulinemia B;
Bence-Jones proteins are monoclonal light chains excreted in the urine, seen with multiple
myeloma, and other neoplasms of lymphoid cells. Small amounts can be missed by urine
dipsticks, which are more sensitive to albumin than globulins. They are best detected by urine
protein electrophoresis, immunoelectrophoresis, or immunofixation. Large amounts cause renal
tubular damage, resulting in myeloma kidney. Bence-Jones proteins have unusual heat solubility
properties, in that they precipitate between 50- 60 degrees C and redisolve at 90 -100 degrees C.
Historical detection methods often utilized this unusual property.
, MLT ASCP Practice Questions: Urinalysis &
Body Fluids Test Banks With Solutions
T/F:
The crystals that are seen in this image are calcium oxalate. False; These are leucine
crystals.
Identify the urine sediment elements shown by the arrow:
A. Cholesterol crystals
B. Uric acid crystals
C. Amorphous urate crystals
D. Cystine crystals D;
Cystine crystals are characteristically seen as colorless hexagonal plates in acid urine. They may
be confused with hexagonal uric acid crystals. They can be differentiated from uric acid by their
solubility in dilute hydrochloric acid versus crystalline uric acid, which is not soluble in dilute
hydrochloric acid. The cyanide-nitroprusside test can be used to confirm the presence of cystine
in urine. Cystine crystals are not present in normal urine.
An average adult would excrete approximately what volume of urine per 24 hours:
A. 3000 ml
