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MLT ASCP Practice Questions: Urinalysis & Body Fluids Test Banks With Solutions
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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 f...

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  • October 26, 2024
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  • 2024/2025
  • Exam (elaborations)
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  • urinalysis body fluids test banks with solution

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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

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