BOC Practice Study Test Questions with All Correct Answers

BOC Practice Study Test Questions with All Correct Answers What is the approximate time that should be allowed for samples to completely clot before centrifugation for serum samples? A. 5 min B. 10 min C. 15 min D. 20 min - Answer-D The ketone component that is measured by the nitroprusside reaction is: A. Acetoacetic acid B. Beta-hydroxybutyric acid C. Acetone D. C-reactive protein - Answer-A What is the correct description for Group II discrepancies? A. due to miscellaneous problems B. caused by protein or plasma abnormalities C. due to weakly reacting or missing antigens D. die to weakly reacting or missing antibodies - Answer-C The American Diabetes Association (ADA) recommends performing routine OGTT: A. on all individuals who are at increased risk for diabetes B. on all children under 5 C. on all pregnant females D. OGTT use is discouraged for routine use - Answer-D How does the lab immunologic assessment of Waldenstom's Primary Macroglobulinemia differ from other monoclonal gammopathies? A. frequently an increase in IgG, possibly an M spike on serum protein electrophoresis B. overproduction of IgM antibodies C. only kappa or lambda monoclonal light chains or Bence-Jones protein seen on serum protein electrophoresis D. characterized by the presence of monoclonal proteins composed of the heavy chain portion of the immunoglobulin molecule - Answer-B Each of the tests below are appropriately matched w/a chemical responsible for producing a positive result EXCEPT: A. ONPG - beta-galactosidase B. Citrate - alpha naphthol C. Indole production - dimenthylaminobenzaldehyde D. H2S production - sodium thiosulfate - Answer-B Which of the following statements is true regarding the staining protocol used for bone marrow smears compared to that for peripheral blood smears? A. bone marrow smears cannot be stained w/automated stainers B. longer staining time should be used to allow thorough staining C. Wright-Giemsa stain cannot be used w/bone marrow smears D. fixing w/absolute methanol is not required w/bone marrow staining - Answer-B Which absorption technique removes cold (IgM) antibodies, particularly anti-I specificities? A. cold autoabsorption B. warm autoabsorption C. differential (allogenic) D. rabbit erythrocyte stroma (RESt) - Answer-D Which two of the following crystalline elements are found in acid urine: A. Cystine and calcium carbonate B. Triple phosphate and calcium carbonate C. Calcium phosphate and uric acid D. Tyrosine and cystine - Answer-D Which of the following best describes the methodology for FISH? A. direct nucleic acid test that uses RNA northern blot or DNA southern blot to detect variations B. signal amplification test that uses signal amplification and alkaline phosphatase C. target amplification test that uses thermal cycling and DNA polymerase D. target amplification test using thermal cycling and DNA ligase - Answer-A All of the following statements are characteristics of the role of C-reactive protein (CRP) EXCEPT: A. activates complement B. binds w/factor H to initiate alternate complement pathway C. exhibits pro-inflammatory characteristics D. initiates opsonization - Answer-B The observation of darkly pigmented colonies on agar as illustrated in this photograph is somewhat of a surprise. The colonies of each of the following bacterial species may have an appearance similar to that seen here EXCEPT: A. Prevotella melaninogenica B. Stenotrophomonas maltophilia C. Chromobacterium violaceum D. Pseudomonas aeruginosa - Answer-B Which of the following hemoglobins is known to migrate w/HbS during electrophoresis when an alkaline gel, such as cellulose acetate, is used? A. A2 B. C C. D D. F - Answer-C What is the minimum hemoglobin concentration required for autologous blood donation? A. 11 g/dL B. 10 g/dL C. 13 g/dL D. 12.5 g/dL - Answer-A What form of immunity is expected to provide long-term protection after hepatitis B vaccine (HBV) is administered to an immunocompetent person? A. active B. passive C. adaptive D. innate - Answer-A On a patient that has a large amount of glucose in their urine, what would be the expected specific gravity (SG) taken from a refractometer in comparison to the dipstick SG? A. refractometer SG would be lower than dipstick SG B. refractometer SG would be higher than dipstick SG C. dipstick SG would be the same as refractometer SG D. unable to determine - Answer-B When collecting a urine specimen for workplace drug testing, which of the following situations may indicate that the specimen has been tampered w/or adulterated? A. the temperature of the specimen reads 34C B. the specific gravity test result is 1.001 C. the color of the specimen is amber D. the specific gravity test result is 1.020 - Answer-B