Medical Technology Board Examination Review Notes on Clinical Microscopy 2

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Clinical Microscopy

1. The primary chemical affected by the renin-angiotensin-aldosterone system is:
     a. Chloride
     b. Sodium
     c. Potassium
     d. Hydrogen

2. The fluid leaving the glomerulus has a specific gravity of:
     a. 1.005
     b. 1.010
     c. 1.015
     d. 1.020



3. What are the variables included in the Cockgroft and Gault formula for creatinine clearance?
1. Age           3. Urine creatinine
2. Sex           4. Body weight
     a. 1, 2 and 3
     b. 1 and 3
     c. 1, 2 and 4
     d. 1, 2, 3 and 4

4. The average total volume of urine produced by a normal adult every 24 hours is about:
     a. 750 mL
     b. 1200 mL
     c. 2000 mL
     d. 2400 mL

5. An abnormal decrease in urine production is called:
     a. Anuria
     b. Oliguria
     c. Polyuria
     d. Dysuria

6. Cloudiness in a freshly-voided urine could indicate the presence of:
     a. Protein
     b. Sugar
     c. WBCs
     d. Any of these

7. Which of these plasma substances is NOT normally filtered through the glomerulus in significant amounts?
     a. Protein
     b. Glucose
     c. Creatinine
     d. Urea



8. Which term is defined as a urine volume in excess of 2000 mL excreted over a 24-hour period?
     a. Anuria
     b. Oliguria
     c. Polyuria
     d. Hypersthenuria

9. Which of the following will contribute to a specimen’s specific gravity if it is present in a person’s urine?
     a. 50-100 RBC/hpf
     b. 85 mg/dL glucose
     c. 3+ amorphous phosphates
     d. Moderate bacteria

10. Why is the first-voided morning urine specimen the most desirable specimen for routine urinalysis?
     a. Most dilute specimen of the day
     b. Less contamination by microorganisms
     c. It can detect orthostatic proteinuria
     d. Most concentrated specimen of the day

11. Freshly voided normal urine is usually clear; however, if it is alkaline, a white turbidity may be present due to:
     a. Yeast cells
     b. Uroerythrin
     c. WBCs
     d. Amorphous phosphates

12. A strong odor of cabbage in a urine specimen could indicate:
     a. Methionine malabsorption
     b. Trimethylaminuria
     c. Phenylketonuria
     d. Tyrosyluria

13. A specimen with a strong ammonia odor and a heavy white precipitate when it arrives in the laboratory may require:
     a. Collection of a fresh specimen
     b. Centrifugation
     c. Dilution for specific gravity
     d. Testing under a hood

14. A correlation exists between a specific gravity of 1.050 and a:
     a. 2+ protein
     b. 2+ glucose
     c. Radiographic dye infusion
     d. First morning specimen



15. A yellow-brown specimen that produces a yellow foam when shaken can be suspected of containing:
     a. Carrots
     b. Hemoglobin
     c. Rhubarb
     d. Bilirubin

16. A patient with a 1+ protein reading in the afternoon is asked to submit a first morning specimen. The second specimen also has a 1+ protein. This patient is:
     a. Positive for orthostatic proteinuria
     b. Negative for orthostatic proteinuria
     c. Positive for Bence Jones proteinuria
     d. Negative for clinical proteinuria

17. Urinalysis on a patient with severe back and abnominal pain is frequently performed to check for:
     a. Bilirubinuria
     b. Proteinuria
     c. Hematuria
     d. Hemoglobinuria

18. Reagent strip – specific gravity readings are affected by:
     a. Glucose
     b. Radiographic dye
     c. Alkaline urine
     d. All of the above

19. The reagent strip reaction that requires the longest reaction time is:
     a. Bilirubin
     b. Leukocyte esterase
     c. pH
     d. Glucose

20. The enzyme dipstick test for glucose has a sensitivity of:
     a. 10 mg/dL
     b. 50 mg/dL
     c. 100 mg/dL
     d. 200 mg/dL

21. Which of the following is true of the detection of urinary glucose?
a. Any reducing substance can give a false positive reaction w/ copper reduction test for glucose
b. The copper reduction method is specific for glucose
c. Glucose cannot appear in the urine in the absence of elevated plasma glucose
d. Ketonuria may produce a false positive dipstick test for glucose



22. Which of the reagents below is used to detect urobilinogen in urine?
     a. p-Dinitrobenzene
     b. p-Aminosalicylate
     c. p-Dichloroaniline
     d. p-Dimethylaminobenzaldehyde

23. All of the statements below regarding urine bilirubin tests are true EXCEPT:
a. A positive test indicates either liver or hepatobiliary disease
b. The test detects only conjugated bilirubin
c. High levels of ascorbate usually do not interfere
d. Standing urine may become falsely negative due to bacterial hydrolysis

24. A positive test for blood in urine can occur in the following EXCEPT:
     a. Extravascular hemolytic anemia
     b. Crush injury
     c. Malignancy of the kidney or urinary system
     d. Renal calculi

25. Which of the following is the major organic substance found in urine?
     a. Sodium
     b. Glucose
     c. Chloride
     d. Urea

26. A reagent test strip impregnated with an aromatic amine such as p-arsanilic acid or sulfanilamide may be used to detect which analyte?
     a. Bilirubin
     b. Blood
     c. Nitrite
     d. Urobilinogen

27. What is the expected pH range of a freshly voided urine specimen?
     a. 3.5-8.0
     b. 3.5-9.0
     c. 4.0-8.5
     d. 4.5-8.0

28. False positive levels of 5-HIAA can be caused by a diet high in:
     a. Bananas
     b. Tomatoes
     c. Pineapples
     d. All of these

29. Blue diaper syndrome is associated with:
     a. Lesch-Nyhan syndrome
     b. Hartnup disease
     c. Alkaptonuria
     d. Dubin-Johnson syndrome

30. Hurler, Hunter and Sanfilippo syndrome are hereditary disorders affecting metabolism of:
     a. Tryptophan
     b. Purines
     c. Mucopolysaccharides
     d. Porphyrins

31. Uroporphyrinogen decarboxylase deficiency is associated with which of the following?
     a. Acute intermittent porphyria (AIN)
     b. Hereditary coproporphyria (HCP)
     c. Congenital erythropoietic porphyria (CEP)
     d. Porphyria cutanea tarda (PCT)

32. Urinary screening tests for mucopolysaccharides:
1. Acid albumin       3. Cyanide-Nitroprusside
2. CTAB               4. Nitroso-naphthol
     a. 1 and 2
     b. 2 only
     c. 1, 2 and 3
     d. 3 and 4

33. He discovered phenylketonuria from a mentally retarded child with a peculiar mousy odor to his urine:
     a. Ivan Folling
     b. Garrod
     c. Cotugno
     d. Frederik Dekkers

34. A clinically significant epithelial cell is the:
     a. Cuboidal cell
     b. Clue cell
     c. Caudate cell
     d. Squamous epithelial cell

35. When using the glass slide and coverslip method, which of the following might be missed if the coverslip is overflowed?
     a. RBCs
     b. WBCs
     c. Casts
     d. Bacteria

36. Which of the following should be used to reduce light intensity in bright-field microscopy?
     a. Centering screws
     b. Aperture diaphragm
     c. Rheostat
     d. Condenser aperture diaphragm



37. The finding of dysmorphic RBCs is indicative of:
     a. Renal calculi
     b. Traumatic injury
     c. Glomerular bleeding
     d. Coagulation disorders

38. The primary component of urinary mucus is:
     a. Albumin
     b. Uromodulin
     c. Goblet cells
     d. Beta2-microglobulin

39. The purpose of the Hansel stain is to identify:
     a. Neutrophils
     b. Monocytes
     c. Renal tubular cells
     d. Eosinophils

40. What is the normal value for urinary eosinophils?
     a. >10%
     b. <1%
     c. >1%
     d. <10%

41. A disorder characterized by the disruption of the electrical charges that produce the tightly fitting podocyte barrier resulting in massive loss of proteins and lipids:
     a. Alport syndrome
     b. Nephrotic syndrome
     c. IgA nephropathy
     d. Lipid nephrosis

42. Visicoureteral reflux or the reflux of urine from the bladder back into the ureters may result to:
     a. Acute glomerulonephritis
     b. Cystitis
     c. Acute pyelonephritis
     d. Acute interstitial nephritis

43. The presence of renal tubular epithelial cells and casts is an indication of:
     a. Acute interstitial nephritis
     b. Chronic glomerulonephritis
     c. Minimal change disease
     d. Acute tubular necrosis

44. End-stage renal disease is characterized by all of the following EXCEPT:
     a. Electrolyte imbalance
     b. Azotemia
     c. Hypersthenuria
     d. Isosthenuria

45. Broad and waxy casts are most likely associated with:
     a. Nephrotic syndrome
     b. Acute renal failure
     c. Chronic renal failure
     d. Focal segmental glomerulosclerosis

46. It is described as a genetic disorder showing lamellated and thinning of glomerular basement membrane:
     a. Goodpasture syndrome
     b. Alport syndrome
     c. Nephrotic syndrome
     d. Wegener’s granulomatosis

47. Casts are formed primarily in which portion of the kidney?
     a. Distal convoluted tubule
     b. Glomerulus
     c. Loop of Henle
     d. Proximal convoluted tubule

48. A parasite associated with a positive leukocyte esterase is:
     a. Enterobius vermicularis
     b. Trichomonas vaginalis
     c. Schistosoma haematobium
     d. Candida albicans

49. The hormone characteristically present in the blood of pregnant women and which, when its concentration in the blood reaches a certain point, also appears in the urine is:
     a. Estradiol
     b. Aldosterone
     c. Progesterone
     d. hCG

50. HCG is produced by which of the following?
     a. Cytotrophoblast cells
     b. Argentaffin cells
     c. Endocervical glandular cells
     d. Type II pneumocytes

51. The most common composition of renal calculi is:
     a. Calcium oxalate
     b. Magnesium ammonium phosphate
     c. Cystine
     d. Uric acid

52. A renal calculi described as yellowish to brownish red in color with a moderately hard consistency is:
     a. Cystine
     b. Phosphate
     c. Calcium oxalate
     d. Uric acid

53. A renal calculi described as pale and friable is:
     a. Cystine
     b. Phosphate
     c. Calcium oxalate
     d. Uric acid

54. A stool specimen collected from an infant with diarrhea has a pH of 5.0. This result correlates with a:
     a. Positive APT test
     b. Negative trypsin test
     c. Positive Clinitest
     d. Negative occult blood test

55. What is the gold standard for fecal fat determination?
     a. Van de Kamer titration
     b. Van den Berg reaction
     c. APT test
     d, D-Xylose test

56. Which of the following pairings of stool appearance and cause does not match?
     a. Pale, frothy: steatorrhea
     b. Black, tarry: blood
     c. Yellow-gray: bile duct obstruction
     d. Yellow-green: barium sulfate

57. All of the following statements about CSF are true EXCEPT:
a. CSF is formed by ultrafiltration of plasma through the choroid plexus
b. CSF circulates in the subarachnoid space and ventricles of the brain
c. The chemical composition of CSF is similar to plasma
d. Reabsorption of CSF occurs via vessels in the sagittal sinus

58. All of the following are indication of CSF traumatic tap EXCEPT:
     a. Clearing of fluid as it is aspirated
     b. A clear supernatant after centrifugation
     c. Xanthochromia
     d. Presence of a clot in the sample

59. The term used to denote a high WBC count in the CSF is:
     a. Empyema
     b. Neutrophilia
     c. Pleocytosis
     d. Lymphocytosis

60. The limulus lysate test on CSF is a sensitive assay for:
     a. Viral meningitis
     b. Cryptococcal meningitis
     c. Gram positive bacterial exotoxin
     d. Gram negative bacterial endotoxin

61. A normal CSF glucose and lactate level is associated with which type of meningitis?
     a. Viral meningitis
     b. Bacterial meningitis
     c. Fungal meningitis
     d. Tubercular meningitis

62. The most common cause of male infertility is:
     a. Mumps
     b. Klinefelter’s syndrome
     c. Varicocele
     d. Malignancy

63. Which of the following stains is used to determine sperm viability?
     a. Eosin
     b. Hematoxylin
     c. Papanicolau
     d. Methylene blue

64. Seminal fluid viscosity graded as 4 is described as:
     a. Watery
     b. Fair
     c. Friable
     d. Gel-like

65. The sugar present in the seminal fluid in high concentration is:
     a. Glucose
     b. Lactose
     c. Fructose
     d. Sucrose

66. Maturation of spermatozoa takes place in the:
     a. Sertoli cells
     b. Seminiferous tubules
     c. Epididymis
     d. Seminal vesicles

67. Which test for FLM is least affected by contamination with hemoglobin and meconium?
     a. Amniostat-FLM
     b. Foam stability
     c. Lamellar body count
     d. L/S ratio

68. How are specimens for FLM testing delivered to and stored in the laboratory?
     a. Delivered on ice and refrigerated or frozen
     b. Immediately centrifuged
     c. Kept at room temperature
     d. Protected from light

69. The presence of a fetal neural tube disorder may be detected by:
     a. Increased amniotic fluid bilirubin
     b. Increased maternal serum alpha-fetoprotein
     c. Decreased amniotic fluid phosphatidyl glycerol
     d. Decreased maternal serum acetylcholinesterase

70. What type of tube for gastric fluid collection is inserted through the mouth?
     a. Rehfuss tube
     b. Levine tube
     c. Diagnex tube
     d. None of these

71. A gastric disorder characterized by achlorhydria due to the presence of anti-parietal cell antibodies:
     a. Zollinger-Ellison disease
     b. Helicobacter pylori infection
     c. Pernicious anemia
     d. Cystic fibrosis

72. All of the following may be associated with bronchial asthma EXCEPT:
     a. Creola bodies
     b. Curschmann’s spirals
     c. Charcot-Leyden crystals
     d. Pneumoliths

73. A sputum that is rusty-colored and filled with pus is associated with:
     a. Congestive heart failure
     b. Lobar pneumonia
     c. Tuberculosis
     d. Anthracosis

74. Rice bodies are called so because:
     a. It was discovered by Dr. Rice
     b. It resembles cooked rice
     c. It resembles uncooked rice
     d. It resembles polished rice

75. Lyme arthritis is caused by:
     a. Borrelia recurrentis
     b. Borrelia hermsii
     c. Borrelia burgdorferi
     d. Neisseria gonorrhoeae

76. CYFRA 21-1 is a tumor marker for:
     a. Uterine cancer
     b. Colon cancer
     c. Lung cancer
     d. Breast cancer


77. This is a sensitive test for the detection of intra-abdominal bleeding:
     a. Peritoneal lavage
     b. Bronchioalveolar lavage
     c. Thoracic lavage
     d. Pericardial lavage

78. What is the method of choice for preservation of routine urinalysis samples?
     a. Boric acid
     b. Formalin
     c. Sodium fluoride
     d. Refrigeration

79. A urine specimen for routine urinalysis would be rejected by the laboratory because:
     a. The specimen had been refrigerated
     b. More than 50 mL was in the container
     c. The label was placed on the side of the container
     d. The specimen and accompanying request did not match

80. Which of the following is the preferred urine specimen for cytology studies?
     a. Catheterized
     b. First morning
     c. Suprapubic aspiration
     d. Three-glass collection

81. Following collection, urine specimens should be delivered to the laboratory promptly and tested within ___ hour(s)
     a. 1
     b. 2
     c. 3
     d. 4

82. All of the following changes occur in unpreserved urine EXCEPT:
1. Decreased glucose  3. Increased ketones    5. Incr. urobilinogen
2. Increased pH       4. Increased clarity    6. Increased bacteria
     a. 3, 4 and 5
     b. 1, 2 and 6
     c. 1, 3 and 5
     d. 1, 2, 3, 4, 5 and 6

83. Which of the following matches regarding specimen collection is/are incorrect?
1. Arthrocentesis – synovial fluid  3. Thoracentesis – Ascitic fluid
2. Amniocentesis – amniotic fluid   4. Pericardiocentesis – Pleural fluid
     a. 1 and 2
     b. 3 and 4
     c. 1 and 3
     d. 2 and 4

84. The most representative sample for fecal fat analysis is:
     a. First morning
     b. 3-day collection
     c. 2-day collection
     d. None of the above

85. Three labeled tubes of CSF specimen were sent to the laboratory. Which of these tubes will be used for cell counting?
     a. Tube 1
     b. Tube 2
     c. Tube 3
     d. Any of these

86. If seminal fluid fructose analysis will be delayed for more than 2 hours, the sample should be stored at what condition?
     a. Refrigerator temperature
     b. Frozen
     c. Body temperature
     d. Room temperature

87. It is the process that provides documentation of proper sample identification from the time of collection to the receipt of laboratory results:
     a. Proficiency testing
     b. Accreditation
     c. Chain of custody
     d. Pre-analytical phase

88. This is also known as the modulation contrast microscope:
     a. Nomarski
     b. Hoffman
     c. Kohler
     d. Phase-contrast

89. It refers to the ability of a microscopic lens to distinguish two small objects that are a specific distance apart:
     a. Parfocal
     b. Birefringence
     c. Illumination
     d. Resolution

90. Which type of microscopy is used to aid in identification of cholesterol in oval fat bodies, fatty casts and crystals?
     a. Polarizing
     b. Phase-contrast
     c. Interference-contrast
     d. Dark-field


91. It is based on the principle that the frequency of a sound wave entering a solution changes in proportion to the density of the solution
     a. Harmonic oscillation densitometry
     b. Refractive index
     c. Urinometer
     d. Reagent strip

92. What is the minimum urine volume required by the Clinitek Atlas automated instrument?
     a. 1 mL
     b. 2 mL
     c. 7 mL
     d. 15 mL

93. All of the following are important to protect the integrity of reagent strips EXCEPT:
     a. Storing in an opaque bottle
     b. Storing at room temperature
     c. Removing the dessicant from the bottle
     d. Resealing the bottle after removing a strip

94. When a control is run, what information is documented?
     a. The lot number
     b. Expiration date of the control
     c. The test results
     d. All of the above

95. Given the following, identify the preanalytical errors:
1. Patient misidentification   4. Insufficient urine volume
2. Poor handwriting            5. Delayed transport of urine to lab
3. Reagent deterioration       6. Instrument malfunction
     a. 1, 4 and 5           c. 1, 2 and 3
     b. 2, 3 and 6           d. 4, 5 and 6

96. The best way to break the chain of infection is:
     a. Decontamination
     b. PPE
     c. Aerosol prevention
     d. Handwashing

97. An acceptable disinfectant for blood and body fluid decontamination is:
     a. NaOH
     b. Antimicrobial soap
     c. H2O2
     d. Sodium hypochlorite

98. The last thing to do when a fire is discovered is to:
     a. Rescue persons in danger
     b. Activate the alarm system
     c. Close doors to other areas
     d. Extinguish the fire if possible

99. A class ABC fire extinguisher contains:
     a. Water
     b. Dry chemicals
     c. Sand
     d. Acid

100. Correct procedure for handwashing, EXCEPT:
     a. Wet hands with warm water
     b. Thoroughly clean between fingers for at least 15 seconds
     c. Rinse hands in an upward position
     d. Turn off faucets with a clean paper towel


ANSWER KEY: Clinical Microscopy


1.      B
2.      B
3.      C
4.      B
5.      B
6.      C
7.      A
8.      C
9.      B
10.  D
11.  D
12.  A
13.  A
14.  C
15.  D
16.  B
17.  C
18.  C
19.  B
20.  C
21.  A
22.  D
23.  C
24.  A
25.  D
26.  C
27.  D
28.  D
29.  B
30.  C
31.  D
32.  A
33.  A
34.  B
35.  C
36.  C
37.  C
38.  B
39.  D
40.  B
41.  B
42.  C
43.  D
44.  C
45.  C
46.  B
47.  A
48.  B
49.  D
50.  A
51.  A
52.  D
53.  B
54.  C
55.  A
56.  D
57.  C
58.  C
59.  C
60.  D
61.  A
62.  C
63.  A
64.  D
65.  C
66.  C
67.  A
68.  A
69.  B
70.  A
71.  C
72.  D
73.  B
74.  D
75.  C
76.  C
77.  A
78.  C
79.  D
80.  C
81.  B
82.  A
83.  B
84.  B
85.  C
86.  B
87.  C
88.  B
89.  D
90.  A
91.  A
92.  B
93.  C
94.  D
95.  A
96.  D
97.  D
98.  D
99.  B
100. C