ASCP ASCP Certifications ASCP-MLT Questions & Answers

• Question 61:

  Refrigerated temperatures, those close to 4 °C, are recommended for the preservation of enzyme activity in a patient sample.

  Chemistry

  The recommended storage temperature for the preservation of activity for MOST enzymes is:

  A. 0 °C

  B. 4 °C

  C. 25 °C

  D. 37 °C

  Correct Answer: B

• Question 62:

  Kell, Kidd, and Duffy are usually warm reacting IgG antibodies. The most common P system antibody is anti-P1, which is a frequently naturally occurring low titer IgM antibody, seen in most P2 individuals. Blood bank

  Which of the following blood groups is most frequently associated with cold agglutinins:

  A. Kell

  B. Kidd

  C. Duffy

  D. P

  Correct Answer: D

• Question 63:

  In this case, with the pre-incubation aPTT mixing study result "corrected" and the post- incubation aPTT mixing study result "not corrected", a coagulation inhibitor should be suspected. Both anti-factor VIII and lupus anticoagulant have been known to be slow-acting and can exhibit this result pattern. If a factor deficiency was present, we should not see a post-incubation prolongation. Hematology What may cause the following mixing studies results? Initial aPTT = 133 seconds

  1:1

  Mix aPTT pre-incubation = 33 seconds

  1:1

  Mix aPTT post-incubation = 124 seconds

  A.

  Factor IX deficiency

  B.

  Factor XI deficiency

  C.

  A slow acting coagulation inhibitor

  Correct Answer: C

• Question 64:

  Prozone effect (due to antibody excess) will result in an initial false negative in spite of the large amount of antibody in the serum, followed by a positive result as the specimen is diluted. The prozone effect ( when performing a screening titer) is most likely to result in:

  A. False positive

  B. False negative

  C. No reaction at all

  D. Mixed field reaction

  Correct Answer: B

• Question 65:

  Donor and recipient blood samples (samples utilized for pre-transfusion compatibility testing) must be kept for at least 7 days after transfusion. Blood samples must be available to investigate a transfusion reaction, if necessary. Donor and recipient blood samples must be kept for at least how long after transfusion?

  A. 10 days

  B. 7 days

  C. 3 days

  D. Not a requirement

  Correct Answer: B

• Question 66:

  FAB M5 is acute monoblastic leukemia FAB M1 is acute myeloblastic leukemia without maturation FAB M3 is acute promyelocytic leukemia FAB M4 is acute myelomonocytic leukemia Which FAB designation is called the "true" monocytic leukemia and is characterized by monoblasts, promonocytes, and monocytes?

  A. FAB Ml

  B. FAB M3

  C. FAB M4

  D. FAB M5

  Correct Answer: D

• Question 67:

  Blood Bank; Immunology

  Which of the following best describes the primary function of antibodies:

  A. Protect B-lymphocytes

  B. Bind with antigen

  C. Fix complement

  D. Stimulate the immune response

  Correct Answer: B

• Question 68:

  The two main areas of the clinical laboratory are:

  A. cytology and histology.

  B. chemistry and hematology.

  C. urinalysis and microbiology.

  D. anatomical and clinical.

  Correct Answer: D

• Question 69:

  Convert the following temperature from Celsius to Fahrenheit -10 degrees C Question options:

  A. 39.2 degrees F

  B. 77 degrees F

  C. 68 degrees F

  D. 14 degrees F

  Correct Answer: D

• Question 70:

  Which advancement in clinical science occurred during the second half of the twentieth century?

  A. invention of the microscope

  B. identification of the smallpox virus

  C. replacement with tedious tests with more efficient and sophisticated testing technology

  D. addition of protective clothing to daily requirements for staff

  Correct Answer: C