ASCP ASCP Certifications ASCP-MLT Questions & Answers

• Question 471:

  One method of calculating a glomerular filtration rate is using creatinine and urine volume to determine creatinine clearance. The equation is as follows:

  Creatinine Clearance = (urine creatinine X urine flow rate) / plasma creatinine; where urine flow rate = volume in mL /24 hours x h/60 min)

  In this case = creatinine clearance = 124 X (2200/24 x hour/60) / 2 = 94.7 or 95 ml/min

  What is the glomerular filtration rate for a patient with a serum creatinine of 2 mg/dL, if the urine creatinine was 124 mg/dL and the urine volume was 2.2 L/24 hrs?

  A. 9.5 mL/min

  B. 13.6 mL/min

  C. 95 mL/min

  D. 136 mL/min

  E. 1.36 mL/min

  Correct Answer: C

• Question 472:

  Provide the equivalent measurement for 1000 milligrams. Question options:

  A. 1 microgram

  B. 5 grams

  C. 100 microns

  D. 1 gram

  Correct Answer: D

• Question 473:

  One of the key characteristics to the identification of Nocardia asteroides is its inability to hydrolyze casein, tyrosine or xanthine, as shown in this photograph. Nitrates are reduced to nitrites. Both Nocardia brasiliensis and Actinomadura madurae hydrolyze both casein and tyrosine; Streptomyces griseus hydrolyzes all three of the substrates.

  Illustrated in this photograph is an agar quadrant plate containing casein (A), tyrosine (B), nitrate (C) and xanthine (D). None of the substrates have been hydrolyzed and nitrate has been reduced. The most likely identification is:

  

  A. Nocardia asteroides

  B. Nocardia brasiliensis

  C. Streptomyces griseus

  D. Actinomadura madurae

  Correct Answer: A

• Question 474:

  The tube of choice for trace metal analysis is:

  A. red

  B. royal blue

  C. gold

  D. light blue

  Correct Answer: B

• Question 475:

  Bone marrow biopsies are helpful diagnostic tools in: Evaluation of anemia and thrombocytopenia Evaluation of cytopenias Diagnosing leukemias Can be part of evaluation for FUO Bone marrow biopsies are NOT used as screens for hematologic issues during routine check-ups. Hematology In which of the following situations would a bone marrow aspirate and biopsy possibly be used as an aid for diagnosis? (Select all that apply)

  A. Evaluation of anemia and thrombocytopenia

  B. Evaluation of cytopenias

  C. Diagnosis of leukemias

  D. Evaluation of fever of unknown origin (FUO)

  E. Screening for hematologic issues during routine check-ups

  Correct Answer: AD

• Question 476:

  The most likely causes of delayed hemolytic reactions are Kidd system antibodies. Both jka and jkb are often responsible for delayed hemolytic transfusion reactions.

  Blood Bank

  Delayed hemolytic transfusion reactions are usually caused by antibodies directed against what blood group system?

  A. MNS

  B. Kidd.

  C. Kell.

  D. Rh.

  E. ABO

  Correct Answer: B

• Question 477:

  Antibodies are differentiated based on their heavy chains; different heavy chains create different isotypes. Humans have five different isotypes of immunoglobulins.

  Immunology

  The part of the molecule responsible for differences among immunoglobulin classes is:

  A. Fc

  B. Fab

  C. heavy chains

  D. light chains

  E. Hinge regions

  Correct Answer: C

• Question 478:

  hs-CRP is a more sensitive version of the C-reactive protein (CRP) test, a test that has been used for many years to assess inflammation in settings such as lupus, transplantation, infection, etc. Which of the following cardiovascular risk markers is a more sensitive version of a test that is used to assess inflammation?

  A. Oxidized-LDL

  B. hs-CRP

  C. ApoB/ApoA1

  D. LpPLA2

  Correct Answer: B

• Question 479:

  Cholesterol levels do not fluctuate as triglycerides, fatty acids, lipoproteins, and chylomicrons do after an individual eats a meal. This is the reason that patients are told to fast; the laboratory needs a fasting sample to determine a lipid profile or panel which includes the latter four components.

  Which of the following lipid tests is LEAST affected by the fasting status of the patient?

  A. Cholesterol

  B. Triglycerides

  C. Fatty acids

  D. Lipoproteins

  E. Chylomicrons

  Correct Answer: A

• Question 480:

  Which of the procedures listed below will increase the platelet concentration in the preparation of Platelets?

  A. Centrifuge the blood at a low speed, remove the plasma and spin the plasma again at a low speed.

  B. Centrifuge the bood at a low speed, remove the plasma and spin the plasma again at a high speed.

  C. Centrifuge the blood at a high speed, remove the plasma and spin the plasma again at a high speed.

  D. Increase the duration of rotation

  Correct Answer: C