Urinalysis Study Questions

170 Questions | Total Attempts: 3320

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Urinalysis Study Questions

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Questions and Answers
  • 1. 
    Each kidney is composed of more than a million complete urinary functional units called
    • A. 

      Glomeruli

    • B. 

      Nephrons

    • C. 

      Photons

    • D. 

      Medullas

  • 2. 
    Which of the following is not one of the 4 main functions of the kidney?
    • A. 

      To rid the body of excess protein

    • B. 

      To rid the body of waste products of metabolism

    • C. 

      To rid the body of foreign substance

    • D. 

      To maintain acid-base equilibrium

  • 3. 
    The process performed by the glomerulus as a part of urine formation is called
    • A. 

      Filtration

    • B. 

      Secretion

    • C. 

      Absorption

    • D. 

      Transudation

  • 4. 
    An increased cystatin C corresponds to a descreased creatinine clearance and to impaired kidney function.
    • A. 

      True

    • B. 

      False

  • 5. 
    During urine formation which of the following substances is generally not allowed to filter through the glomerular capillaries?
    • A. 

      Ascorbic acid

    • B. 

      Plasma protein

    • C. 

      Urea

    • D. 

      Creatinine

  • 6. 
    Which of the following substances makes up the majority of total urinary dissolved organic solids?
    • A. 

      Protein

    • B. 

      Urea

    • C. 

      Creatinine

    • D. 

      Sodium

  • 7. 
    Which of the following is true of the estimated glomerular filtration rate test/calculation (eGFR)?
    • A. 

      A larger urine sample is needed for the eGFR than for a creatinine clearance test

    • B. 

      Only a blood samples is needed for the eGFR

    • C. 

      Patient race is a factor in the formula

    • D. 

      None of the above

    • E. 

      More than one of the above

  • 8. 
    The total renal blood flow is approximately:
    • A. 

      40 mL/min

    • B. 

      120 mL/min

    • C. 

      600 mL/min

    • D. 

      1200 mL/min

  • 9. 
    In which part of the kidney does concentration of urine mostly take place?
    • A. 

      The glomeruli and bowman's capsules

    • B. 

      The loop of henle

    • C. 

      The proximal convoluted tubules

    • D. 

      The distal convoluted tubules and the collecting duct

  • 10. 
    During the flow of filtrate through the tubules, which of the following substances is not absorbed in significant amounts?
    • A. 

      Water

    • B. 

      Glucose

    • C. 

      Creatinine

    • D. 

      Phosphate

    • E. 

      Sulfate

  • 11. 
    Which of the answers below represents the direction of the flow of filtrate through the nephron?
    • A. 

      Loop of henle, proximal convoluted tubule, distal convoluted tubule, glomerular space (bowman's capsule), collecting tubule

    • B. 

      Collecting tubule, distal convoluted tubule, loop of henle, proximal convoluted tubule, glomerular space (bowman's capsule)

    • C. 

      Proximal convoluted tubule, distal convoluted tubule, glomerular space (bowman's capsule), loop of henle, collecting tubule

    • D. 

      Glomerular space (bowman's capsule), proximal convoluted tubule, loop of henle, distal convoluted tubule, collecting tubule

  • 12. 
    Which of the following is NOT an organic substance found in the urine?
    • A. 

      Urea

    • B. 

      Uric acid

    • C. 

      Creatinine

    • D. 

      Ammonia

  • 13. 
    The average amount of urine passed by a normal adult in 24 hours is approximately:
    • A. 

      300-400 ml

    • B. 

      600-700 ml

    • C. 

      900-1000 ml

    • D. 

      1200-1500 ml

  • 14. 
    The principle site of urea formation is the:
    • A. 

      Spleen

    • B. 

      Kidney

    • C. 

      Liver

    • D. 

      Bladder

  • 15. 
    The renin-angiotensin-aldosterone system is responsible for all of the following except:
    • A. 

      Lowering the glomerular blood pressure

    • B. 

      Vasoconstriction of the renal arterioles

    • C. 

      Reabsorption of sodium

    • D. 

      Release of aldosterone

  • 16. 
    Production of antidiuretic hormone is controlled by the:
    • A. 

      Osmotic gradient of the medulla

    • B. 

      Renin-angiotensin-aldosterone system

    • C. 

      State of body hydration

    • D. 

      Cells of the renal cortex

  • 17. 
    The first morning specimen of urine is requested often because the:
    • A. 

      Patient rested all night

    • B. 

      Urine remains in the bladder for a longer time

    • C. 

      Urine is more concentrated

    • D. 

      Specimen is easier to collect

  • 18. 
    The primary chemical constituents of urine are water,
    • A. 

      Protein and sodium

    • B. 

      Chloride and bilirubin

    • C. 

      Urea and chloride

    • D. 

      Urea and protein

  • 19. 
    The solid, undissolved particles in the urine are preserved:
    • A. 

      Better in acid urine

    • B. 

      Better in neutral urine

    • C. 

      Better in alkaline urine

    • D. 

      Equally well at any pH

  • 20. 
    A urine specimen may be rejected by the laboratory for all of the following reasons EXCEPT:
    • A. 

      Nonmatching label and requisition form

    • B. 

      Specimen and contaminated with feces

    • C. 

      Contamination on the exterior of the container

    • D. 

      The container uses a screw-top lid

  • 21. 
    Upon standing, normal urine becomes alkaline chiefly due to:
    • A. 

      Acid ash

    • B. 

      Increased protein

    • C. 

      Increased quinic acids

    • D. 

      Bacterial action on urea

  • 22. 
    Which of the following will be LEAST affected in an unpreserved specimen left at room temperature overnight?
    • A. 

      Bilirubin

    • B. 

      Urbilinogen

    • C. 

      RBCs

    • D. 

      Protein

  • 23. 
    The preferred method of urine preservation in the laboratory is:
    • A. 

      Refrigeration

    • B. 

      Boric acid

    • C. 

      Sodium fluoride

    • D. 

      Commercial tablets

  • 24. 
    Before analysis, a refrigerated urine specimen must be:
    • A. 

      Warmed to 37 degrees C

    • B. 

      Examined for crystal formation

    • C. 

      Examined for changes in color

    • D. 

      Returned to room temperature

  • 25. 
    Quantitation of a substance that varies with daily activites should be performed on a:
    • A. 

      Random specimen

    • B. 

      First morning specimen

    • C. 

      24 hour specimen

    • D. 

      2 hour postprandial specimen

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