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clinical microscopy
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  • 問題数 100 • 9/29/2024

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  • 1

    1.A urine specimen collected on an apparently healthy 25yo man shortly after he finished eating lunch was cloudy but showed normal results on a multiple rgt test strip analysis.The most likely cause of turbidity is:

    phosphates

  • 2

    2.A phosphatidylglycerol immunochemical slide test shows no visible agglutination for an amniotic fluid collected at 30wks gestation. This should be reported as:

    invalid

  • 3

    3. A sperm count is diluted 1:20 and 50 sperm are counted in 2 secondary squares pf the Neubauer counting chamber. The sperm count is:

    5,000,000/mL

  • 4

    4. The reason for performing a Clinitest on a newborn's urine is to check for:

    galactose

  • 5

    5. The TAU isoform of transferrin is a carbohydrate deficient protein found only in:

    CSF

  • 6

    6. Using polarized light microscopy, which of the following urinary elements are birefringent?

    cholesterol

  • 7

    7. The finding of hemosiderin laden macrophages in a CSF sample indicates:

    previous hemorrhage

  • 8

    8. A deficiency in arginine vasopressin (ADH) is asso with a:

    low urine SG

  • 9

    9. Oval fat bodies are:

    RTE cells that contain lipids

  • 10

    10. The normal GFR is:

    120 mL/min

  • 11

    11. Increased CSF lactate is found in:

    bacterial meningitis

  • 12

    12. Urine from a 50yo man was noted to turn dark red on standing. This change is caused by the presence of:

    porphyrins

  • 13

    13. Urine Reagent strips should be stored in a(n):

    cool dry area

  • 14

    14. Laboratory characteristics of malabsorption syndrome due to pancreatic insufficiency include:

    inc fecal fat

  • 15

    15. An alcoholic or pale/clay-colored stool is:

    a posthepatic biliary obstruction

  • 16

    16. The presence of rice bodies in a synovial fluid is strongly associated with:

    rheumatoid arthritis

  • 17

    17. Creatinine clearance is reported in:

    mL/min

  • 18

    18. A test pad of a urine rgt strip is impregnated with only sodium nitroprusside. This pad will react with:

    acetoacetic acid

  • 19

    19. A urine specimen with an elevated urobilinogen and a negative bilirubin may indicate:

    hemolytic jaundice

  • 20

    20. An ammonia-like odor is characteristically associated with urine from patients who:

    has an infection with Proteus spp

  • 21

    21. Which of the following results would be considered abnormal for seminal fluid?

    liquefaction time >60 mins

  • 22

    22. A vaginal swab is received in the lab for testing & immediately placed in sterile physiological saline to prepare a suspension. A wet mount is prepared & the laboratorian reports presence of numerous clue cells. This most likely indicates the patient has:

    Bacterial vaginosis

  • 23

    23. The presence of which of the following may result in a CSF specimen with an oily appearance?

    radiographic contrast media

  • 24

    24. The pH of a urine specimen measures the:

    free hydrogen ions

  • 25

    25. The most accurate test to determine renal concentration is:

    osmolarity

  • 26

    26. Spherical Transitional Epithelial cells may be confused with:

    RTE cells

  • 27

    27. A xanthochromic CSF specimen is centrifuged resulting in a pink-colored supernatant. This indicates the presence of:

    Oxyhemoglobin

  • 28

    28. False-positive results can occur for fecal occult blood due to the ingestion of:

    horseradish

  • 29

    29. Which of the ff casts is most indicative of end-stage renal disease?

    waxy

  • 30

    30. Isosthenuria is associated with a specific gravity which is usually:

    fixed around 1.010

  • 31

    31. A urine spx is analyzed for glucose by a glucose oxidase rgt test strip & a copper reduction test. If both results are (+), which of the ff interpretations is correct?

    glucose is present

  • 32

    32. Cessation of urine flow is defined as:

    anuria

  • 33

    33. An L/S ratio of 2.4 on amniotic fluid collected at 34 weeks' gestation indicates:

    fetal lung maturity

  • 34

    34 A urine spx is tested and has the following results: Reagent strip Microscopic findings glucose = 3+ WBCs = >100 / hpf protein = 1+ yeast = many This is indicative of:

    diabetes mellitus

  • 35

    35. The most common genetic defect associated with cystic fibrosis is called:

    CFTR delta-F508

  • 36

    36.W/c of the ff substances may interfere with the rgt strip pad for leukocyte esterase & yield a false(-) result?

    protein >500 mg/dL

  • 37

    37. Tiny colorless, dumbbell-shaped crystals were found in an alkaline urine sediment.They are:

    calcium carbonate

  • 38

    38. Which of the following can give a false-negative urine protein reading?

    very dilute urine

  • 39

    39. A paired fasting plasma specimen was collected at the same time an arthrocentesis was performed. The difference in glucose concentrations between the 2 fluids was reported as 55 mg/dL. This result indicates a(an):

    septic condition

  • 40

    40. To prepare the reagent used in confirmatory protein testing, a laboratorian would:

    dissolve 3g SSA in 100mL of water

  • 41

    41. Refractive index is a comparison of:

    light velocity in air to light velocity in solutions

  • 42

    42. An ↑ IgG index on a CSF specimen indicates:

    synthesis of IgG in the CNS

  • 43

    43. Cholesterol crystals will most likely be observed in urine that contains:

    4+ protein

  • 44

    44. After warming, a cloudy urine clears. This is due to the presence of:

    urates

  • 45

    45. Rapid forward progression of sperm is rated as:

    4.0

  • 46

    46. All cast are typically composed of:

    uromodulin

  • 47

    47. Polyuria is usually correlated with

    diabetes mellitus

  • 48

    48. When using the SSA test, false-positive proteins results may occur in the presence of:

    radiographic contrast media

  • 49

    49.Milky urine from a 24yo woman likely contains

    many WBC

  • 50

    50. Which marker can be used to identify if a body fluid contains semen?

    Acid phosphatase

  • 51

    51. A 50yo man is evaluated for back pain. Urine studies include: Specific gravity= 1.017 blood = negative pH = 6.5 Microscopic findings: Protein = negative Epithelial cells = rare glucose = negative Urine protein electrophoresis: - monoclonal spike in gamma globulin region Which of the ff statements best explains these results?

    urine protein is falsely(-) because the method is not sensitive for Bence Jones protein

  • 52

    52. Decrease CSF protein can be found in:

    CSF leakage

  • 53

    53. A sweat chloride >60 mEq/L(60mmol/L) is indicative of:

    cystic fibrosis

  • 54

    54. When identifying urinary crystals, which reagent test strip result is most important?

    pH

  • 55

    55. pH determinations are clinically relevant for which of the following?

    pleural fluid

  • 56

    56. A (+) result for bilirubin on a rgt test strip should be followed up by:

    performing an ictotest

  • 57

    57. The urine microscopic constituents that best differentiate between cystitis and pyelonephritis are:

    WBC casts

  • 58

    58. Amniotic fluid may be tested for the concentration of lamellar bodies. This test is performed to determine:

    fetal lung maturity

  • 59

    59. A urine's SG is directly proportional to its:

    dissolved solids

  • 60

    60. The method of choice for performing a SG measurement of urine ff admin. of xray contrast dye is:

    reagent test strip

  • 61

    61. When using a refractometer to measure urine concentration, the laboratorian must correct for which of the following in their calculations?

    glucose

  • 62

    62. Polarized light can often be used to diff between:

    uric acid and cystine crystals

  • 63

    63. In synovial fluid, the most characteristic finding in pseudogout is:

    calcium pyrophosphate dihydrate crystals

  • 64

    64. Ghost red blood cells are see in urine that is:

    alkaline & dilute

  • 65

    65. Ascites is collected by:

    paracentesis

  • 66

    66. The area of the nephron that is impermeable to water is the:

    ascending LoH

  • 67

    67. Pilocarpine iontophoresis refers to the specific process of: (2 answers)

    inducing sweat & measuring ions in sweat

  • 68

    68. A px with uncontrolled DM will most likely have:

    pale urine w/ a ↑ SG

  • 69

    69. Peritoneal lavage is used to:

    detect intra-abdominal bleeding in blunt injury

  • 70

    70. Urine osmolality is related to:

    specific gravity

  • 71

    71. Epithelial cell casts are most indicative of:

    tubular necrosis

  • 72

    72. Which stain is used to measure sperm viability?

    eosin nigrosin

  • 73

    73. A positive amine or "whiff" test on a vaginal secretion most likely indicates:

    proliferation of G. vaginalis

  • 74

    74. The presence of oligoclonal bands in CSF but no in serum is associated with:

    multiple sclerosis

  • 75

    75. The chromogen for fecal occult blood test is:

    gum guaiac

  • 76

    76. Normal CSF contains all of the ff proteins except:

    fibrinogen

  • 77

    77. Which of the following casts most frequently appears to have a brittle consistency?

    waxy

  • 78

    78. The primary component of most urinary CALculi is:

    calcium

  • 79

    79. Clue cells are a form of:

    squamous epithelial cell

  • 80

    80. The principal mucin in synovial fluid is:

    hyaluronate

  • 81

    81. Bacteria are considered significant in the urine sediment when the:

    leukocytes are present

  • 82

    82. Pleural fluid from a patient with congestive heart failure would be expected to:

    clear & pale yellow

  • 83

    83.The results were obtained on urine spx @ 8:00am: pH=5.5 ketones=3+ nitrite(+) protein=2+ blood(-) glucose=3+ bilirubin(+) If this urine spx was stored uncapped at 5.C w/o preservation & retested at 2:00 pm,w/c of the ff test results would be changed due to storage conditions?

    ketones

  • 84

    84. A 2yo child had a positive urine ketone. This would most likely be caused by:

    vomiting

  • 85

    85. W/c of the ff crystals appear as fine silky needles?

    tyrosine

  • 86

    86.The principle of rgt strip test for microalbuminuria:

    an immunochemical rxn

  • 87

    87. Which of the following urine results is most likely to be affected by prolonged exposure to light?

    bilirubin

  • 88

    88. Which of the following is the best indicator of Reye syndrome for CSF?

    glutamine

  • 89

    89. Which of the following would be affected by allowing a urine specimen to remain at room temperature for 3hours before analysis?

    pH

  • 90

    90. A white precipitate in a urine specimen with a pH of 7.5 would most probably be caused by:

    amorphous phosphates

  • 91

    91. The normal concentration of proteins in CSF, relative to serum protein is

    <1mg/dL

  • 92

    92. Acid urine that contains hemoglobin will darken on standing due to the formation of:

    methemoglobin

  • 93

    93. Evaluation of sperm morphology is performed by staining an air-dried smear with Wright, Giemsa or Papanicolaou stain and evaluating 200 sperm using:

    oil immersion & 100x obj

  • 94

    94. The presence of leukocytes in urine is known as:

    pyuria

  • 95

    95. What calculation is used to determine if there is a breach in the blood-brain barrier?

    CSF/serum albumin index

  • 96

    96. The normal renal threshold for glucose in the adult is approximately:

    160mg/dL (8.8mmol/L)

  • 97

    97. A patient with renal tubular acidosis would most likely excrete a urine with a:

    high pH

  • 98

    98. A build up of fluid in a body cavity is called:

    effusion

  • 99

    99. Osmolality is a measure of:

    dissolve particles, including ions

  • 100

    100. Qualitative methods used as screening test for cystic fibrosis include:

    sweat conductivity