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Urinalysis Exam 1

Urinalyis Exam 1 MC Questions
1. It is sometimes necessary to determine whether a specimen is actually urine. To do this you would measure the concentration of
a. Glucose and ketones
b. Urea and creatinine
c. Uric acid and amino acids
d. Urea and NaCl
2. Urine from patients with diabetes mellitus has
a. Decreased volume and decreased SG
b. Decreased volume and increased SG
c. Increased volume and decreased SG
d. Increased volume and increased SG
3. Red blood cells will last longer (remain intact) in urine that is
a. Concentrated and acidic
b. Concentrated and alkaline
c. Dilute and acidic
d. Dilute and alkaline
4. Substances removed from the blood by tubular secretions include all of the following except
a. Hydrogen ions
b. Ammonia
c. Protein-bound substances
d. Glucose
5. The most common cause of error in the creatinine clearance test is
a. Miscalculation of chemical results
b. Variation in serum creatinine levels
c. Improperly collected urine specimens
d. A diet high in vegetables
6. Osmometers utilizing the freezing point colligative property of solutions are based on the principle that
a. 1 osmole of nonionizing substance dissolved in 1 kilogram of water raises the freezing pint 1.86 degrees C
b. 1 osmole of nonionizing substance dissolved in 1 kilogram of water lowers the freezing point 1.86 degree C
c. Increased solute concentration will raise the freezing point of water in direct proportion to an NaCl standard
d. Decreased solute concentration will decrease the freezing point in direct proportion to an NaCl standard
7. Specimens that contain hemoglobin can be visually distinguished form those that contain intact red blood cells because
a. Hemoglobin produces a clear, pink or red specimen
b. Hemoglobin produces a much brighter red color
c. Red blood cells are quickly converted to hemoglobin
8. Freshly voided normal urine is usually clearhowever if it is acidic, a turbidity after refrigeration may be present due to:
a. Amorphous phosphates
b. WBC
c. Urochrome
d. Amorphous urates
9. The principle of light reflectance is used to determine
a. Specimen color and clarity
b. SG
c. Reagent strip chemical reactions
d. Automated microscopic analysis
10. Reagent strip chemical tests may be inaccurate if the specimen is
a. Mixed prior to testing
b. Tested immediately after refrigeration
c. Tested immediately after it is voided
d. Collected by catheter
11. A patient has a 1+ protein reaction on a specimen collected in the doctor's office. The doctor instructs the patient to collect a specimen immediately upon arising the next day. The second specimen is negative for protein. This indicates
a. Nocturnal proteinuria
b. Orthostatic proteinuria
c. Microalbuminuria
d. Diurnial proteinuria
12. Galactose will react with
a. Multisitix but no clinitest
b. Multistix but not chemstrip
c. Multistix and chemstrip
d. Clintest but not multistix
13. A urinalysis report shows Bilirubin positive
Blood trace
Urobilinogen 0
Nitrite negative
This suggest:
a. Abnormal destruction of RBCs in body
b. Inflammation of the liver
c. Severe upper urinary tract infection
d. Bile duct obstruction
14. The reagent strip test for nitrite is based on the
a. Utilization of nitrite by bacteria present in the urine
b. Reaction of nitrite with the cell wall of gram-negative bacteria
c. Reduction of nitrate in urine to nitrite by bacteria
d. Reaction of bacterial nitrite with an aromatic amine to produce pH change
15. If urine contains bacteria which of the following will be affected if the specimen is allowed to stand at least 2 hours before examining ,
a. SG
b. pH
c. bilirubin
d. occult blood
16. it is important to keep the lid tightly capped on the dipstix bottle because
a. the reagents will dry out
b. the reagent will give false negative results
c. the reagent colors will fade
d. the reagents will give false positive results
17. the most common indicator of renal disease is
a. decreased pH
b. decreased volume
c. bacteriuria
d. proteinuria
18. A positive chemical test for blood with no red blood cells found in the sediments
a. Should have both tests repeated if the specimen is clear and red
b. Indicates the presence of hemoglobin or myoglobin
c. Indicates possible acute glomerulonephritis
d. Is not possible
19. A urine specimen is tested by reagent strip and sulfosalicylic acid (SSA) to determine whether protein is present. The strip yields a negative protein whereas the SSA results in a reading of 2+ protein. This difference is best explained by which of the following statements?,
a. The urine contained an excessive amount of amorphous urates or phosphates that caused the turbidity seen with the SSA test
b. The urine pH was greater than 8, exceeding the buffering capacity of the reagent strip thus causing a false negative reaction
c. A protein other than albumin must be present in the urine
d. The reading time of the reagent strip was exceeded, causing a false negative reaction to be detected.
20. The specimen of choice for bacterial cultures is
a. First morning
b. 24 hour
c. Random
d. Clean catch midstream
21. Which of the following specific gravities would most likely correlate with a dark yellow urine?
a. 1.003
b. 1.008
c. 1.018
d. 1.030
22. The blood level at which glucose will appear in the urine is called the
a. Tolerance level
b. Filtration rate
c. Renal threshold
d. Secretion constant
23. The reagent nitroprusside reaction is most likely positive in
a. Starvation
b. Cystitis
c. Renal failure
d. Bile duct obstruction
24. When bilirubin is found in the urine it can be assumed that
a. It is attached to protein
b. It has passed through the small intestine
c. The patient is diabetic
d. It has been conjugated in the liver
25. The method for preserving a urine specimen for routine urinalysis with the least interference is
a. Formalin
b. Refrigeration
c. Boric acid
d. Sodium fluoride
26. The ability of a test strip to react to the substance being tested and to no other is referred to as test
a. Standardization
b. Specificity
c. Sensibility
d. Sensitivity
27. Refrigerated urine specimens are often cloudy due to
a. Bacterial contamination
b. Precipitation of protein
c. Precipitation of amorphous phosphates or urates
d. Both A and B
28. Urine with a sweet
fruity odor may indicate the urinary presence of ,
a. Glucose
b. Proteins
c. Lipids
d. Ketone bodies
29. The SG of normal urine is defined as the ratio of the weight of a given volume of
a. Urine to an equal volume of water at a specific temperature
b. Water to an equal volume of urine at a specific temperature
c. Urine to an equal volume of alcohol at a specific temperature
d. Alcohol to an equal volume of urine at a specific temperature
30. Which of the following conditions may be responsible for urine with an abnormally high SG?
a. Chronic renal disease in which the kidneys cannot concentrate or dilute urine
b. Diabetes insipidus
c. Radiographic dyes injected into a patient
d. All of the above
31. Which of the following substances is secreted by the adrenal cortex to aid in sodium reabsorption?
a. ADH
b. Angiotensin
c. Renin
d. Aldosterone
32. Which of the following with blood cells occur most frequently in urine sediment?
a. Monocytes
b. Neutrophils
c. Lymphocytes
d. Histiocytes
33. Which of the following substances does NOT ordinarily pass through the glomerular membrane during ultrafiltration?
a. Glucose
b. Water
c. Amino acids
d. High molecular weight proteins
34. The higher the pH level of urine the ,
a. Higher the chloride ion concentration in the urine
b. Lower the chloride ion concentration in the urine
c. Higher the hydrogen ion concentration in the urine
d. Lower the hydrogen ion concentration in the urine
35. The presence of ketone bodies in the urine is indicative of excessive
a. Protein metabolism
b. Glucose metabolism
c. Carbohydrate metabolism
d. Fat metabolism
36. Myoglobinuria is a rare condition which results from
a. Extensive muscle degeneration
b. Incompatible blood transfusions
c. Chronic renal disease
d. Progressive cirrhosis of the liver
37. The sulfosalicylic acid test is useful in detecting
a. Salicylates
b. Proteins
c. Gluetelins
d. Protamines
38. Which of the following is NOT a possible factor responsible for urine with cloudy appearance?
a. Bacterial contamination
b. Presence of excess proteins, glucose, and ketone bodies
c. Precipitation of amorphous phosphates and urates
d. Presence of prostatic fluid and sperm
39. The kidneys help control blood pressure by secreting
a. Erythropoietin
b. Renin
c. Aldosterone
d. ADH