LAB Urinalysis

  1. How much of the bodys blood do the kidneys filter a minute?
    about 1/4
  2. How much urine does a person void in a day?
  3. What is the composition of Urine?
    • ~90% water
    • glucose
    • urea wastes
    • Amino Acids
    • Electrolytes
  4. What should the odor of urine be?
    mild, not fruity or like ammonia
  5. What should the color of urine be and what causes this?
    Urochrome should cause it to be pale yellow

    • Urochrome is produced from the breakdown of RBCs
    • Heme-->bilirubin, Urochrome, Urobilin
    • BR-->bile in liver
    • urochrome-->urine
    • urobilin-->feces
  6. What should the clarity of Urine be?
    Should be clear, not cloudy
  7. what should the pH of urine be?
    4.5-8.0, most commonly at pH6, slightly alkaline
  8. What is the specific gracity of urine and what is this compared to?
    The specific gravity of urin is 1.01-1.025

    this is compared to water at 1.00

    higher solutes in the urine result in a higher specific gravity, such as with diabetes mellitus and pregnancy
  9. What are the measurable checmical aspects of urine?
    • Glucose
    • Bilirubin
    • Ketones
    • pH
    • protein
    • blood
    • specific gravity
    • nitrites
    • and leukocytes
  10. What should be absent from a urine sample?
    • blood (either hemolyzed or whole blood)
    • glucose (or a small amount of 160mm/dl)
    • bilirubin- from liver, gb, hemolysis
    • ketones (fats used for energy/ATP)
    • nitrites
    • leukocytes
    • proteins (a trace is ok)-macromolecules-->Albumin
  11. What can be measured in urine to test for diabetes mellitus?
    • glucose levels
    • ketones
    • specific gravity
  12. What can be measured in urine to check for liver and gallbladder problems?
    • bilirubin
    • urobilirubin
  13. What can be measured to check for UTI or bladder infections?
    • Nitries
    • Leukocytes
  14. What are kidney stones called?
    Renal calculi
  15. What are the sediments found in urine?
    • 1. Squamous epithelium (most common)
    • 2. Cuboidal or transitional cells
    • 3. WBC/RBC
    • 4. Bacterial Yeast
    • 5. Crystals (uric acid, cholesteral, calcium)
    • 6. Mucus threads (women)
    • 7. Casts- hyaline, granular, protien gell tubes
Card Set
LAB Urinalysis
for final exam Ciotti