ASCP ASCP-MLT Online Practice Questions and Exam Preparation

ASCP ASCP-MLT Online Questions & Answers

• Question 81:

  Isotonic or normal saline is a 0.85 % solution of sodium chloride in water. The concentration of sodium chloride in an isotonic solution is :

  A. 8.5 %
  B. 0.85 %
  C. 0.08 %
  D. 1 molar
  B. 0.85 %

• Question 82:

  Creatinine clearance tests are utilized to estimate the glomerular function of the kidney. The creatitine clearance calculation is defined as the volume of plasma that is cleared of creatinine by the kidney per unit of time and uses the following formula:

  creatinine clearance = Urine creatinine conc x Volume / Plamsa creatinine conc

  Creatinine clearance measurements have a recommended specimen requirement = 24- hour urine collection.

  Which of the following tests would be useful in the assessment of glomerular filtration:

  A. 24 hour urine protein
  B. Creatinine clearance
  C. PSP test
  D. Urea clearance
  C. PSP test

• Question 83:

  The hepatitis B vaccine is a series of immunizations consisting of three injections of the hepatitis B antigen. The antigen causes the recipient of the injection to make antibodies against the antigen, hence why this is an example of active

  immunity.

  Immunology

  The hepatitis B virus vaccine was administered to MLS students during Orientation. Which type of immunity is expected to develop and provide long-term protection?

  A. active
  B. passive
  C. adoptive
  D. innate
  E. inactive
  A. active

• Question 84:

  Beer's law is based on the fact that absorbance is directly proportional to the concentration of a solution. Therefore, stray light can alter the absorbance results in this type of assay.

  Deviations from Beer's Law are caused by:

  A. very low concentration of absorbing material
  B. polychromatic light
  C. very high concentrations of substance being measured in a colorimetric reaction D. stray light
  D

• Question 85:

  Acute hemolytic transfusion reactions are most commonly due to ABO-incompatible blood being transfused to a recipient with naturally occurring ABO alloantibodies (anti-A, anti-B, anti A,B). Acute intravascular hemolysis as the result of a blood transfusion is most often associated with which of the following causes?

  A. Transfusion of ABO incompatible red cells
  B. Allergies
  C. Passively transfused antibodies to HLA antigens
  D. Transfusion-associated graft-versus-host disease
  A. Transfusion of ABO incompatible red cells

• Question 86:

  Overcentrifugation may cause either a false negative result (if too much agitation is required for resuspension), or a false positive, (if centrifuged clumps cannot be completely dispersed). High concentration of IgG paraprotein, and failure to

  adequately wash cells can leave unbound IgG which will neutralize antiglobulin reagent. Delay of addition of antiglobulin reagent may allow previously bound IgG antibody to dissociate from red cells.

  Blood bank

  Which of the following might cause a false positive indirect antiglobulin test:

  A. Failure to adequately wash cells
  B. Delay of addition of antiglobulin reagent.
  C. Overcentrifugation
  D. High concentration of IgG paraprotein in a patient's serum
  C. Overcentrifugation

• Question 87:

  Tan stopper tubes are used for reticulocyte counts. Question options:

  A. True
  B. False
  B. False

• Question 88:

  Unconjugated bilirubin is a byproduct of RBC breakdown, or hemolysis. It would be expected to see an increase in unconjugated bilirubin when hemolysis is occuring at an increased rate. The liver enzymes would not remain at normal levels if there were a viral infection of the liver, chemical damage to the liver, or obstruction of bile ducts.

  Chemistry

  A patient presents with an elevation of unconjugated bilirubin, normal serum alkaline phosphatase, normal liver enzymes, and no bilirubin in the urine. This combination would suggest:

  A. Viral infection of the liver.
  B. Chemical damage to the liver.
  C. Increased rate of hemolysis
  D. Obstruction of common bile duct
  C. Increased rate of hemolysis

• Question 89:

  Drawing a lavendar stopper tube before an SST tube can cause a falsely: Question options:

  A. decreased glucose value
  B. decreased calcium value
  C. increased calcium value
  D. increased glucose value
  B. decreased calcium value

• Question 90:

  Flow cytometry employs a combination of fluorescent antibody tagging of cells and analysis with laser light scatter.

  What principle(s) of flow cytometry are employed when performing immunophenotyping:

  A. Defraction gradients
  B. Impedance
  C. Defraction gradients and impedance
  D. Fluorescent antibody tagging and light scatter
  C. Defraction gradients and impedance