ASCP ASCP-MLT Online Practice Questions and Exam Preparation

ASCP ASCP-MLT Online Questions & Answers

• Question 441:

  CAMP is the correct answer because the case is typical of Streptococcus agalactiae(Group B strep). The main presumptive identification test is CAMP. Bile solubility is positive for Streptococcus pneumonia. Coagulase would be positive for Staphylococcus aureus. PYR is positive for Streptococcus pyogenes (Group A strep) which is ruled out by the resistance to bacitracin.

  Microbiology

  Spinal fluid cultures on a 3-day-old infant revealed beta-hemolytic, Gram-positive cocci occurring in pairs and chains. The organism was catalase-negative and bile esculin- negative. Resistance to 0.04 U disk of bacitracin was noted. The other test necessary to identify this organism is a positive test by:

  A. Bile solubility
  B. CAMP
  C. Coagulase
  D. PYR
  B. CAMP

• Question 442:

  The red blood cell distribution width (RDW) increases as the severity of alpha thalassemia increases because of changing MCV as the bone marrow produces smaller cells. In addition, if Hemoglobin H bodies are present, they result in the formation of schiztocytes (RBC fragments) that can have an effect on the MCV and RDW.

  The Red cell Distribution Width (RDW) in alpha thalassemia is

  A. within normal limits
  B. usually increased
  C. usually decreased
  D. dependent upon severity
  D. dependent upon severity

• Question 443:

  Intravascular hemolysis is typically associated with increased levels of serum (plasma) LDH and bilirubin, and an increased number of reticulocytes. Serum LDH is found in higher levels during intravascular hemolysis due to fact that high levels of LDH are normally found within the red cells, but is now being spilled into the bloodstream via red cell lysis. Bilirubin is a breakdown product of hemoglobin, which has also been spilled into the bloodstream from broken red blood cells via hemolysis. Reticulocytosis is a reflection of the release of an increased number of immature red blood cells from the marrow to account for the red blood cells that are lost through hemolysis. This is a normal response. Failure to show an increased reticulocyte count with hemolytic episodes or hemorrhage would indicate an ineffective erythropoiesis (possible bone marrow function problem).

  Which of these blood levels will increase during intravascular hemolysis?

  A. Serum (plasma) LDH
  B. Serum (plasma) bilirubin
  C. Reticulocytes
  D. All of the above
  E. None of the above
  D. All of the above

• Question 444:

  Sterile yellow stopper tubes contain thixotropic gel and a clot activator. Question options:

  A. True
  B. False
  B. False

• Question 445:

  A positive RPR test and a negative FTA-ABS test is most likely the result of:

  A. Primary syphilis
  B. Secondary syphilis
  C. Latent syphilis
  D. False positive reaction
  D. False positive reaction

• Question 446:

  The normal pH of blood is 7.40. In order for most metabolic processes to take place, the pH must remain within a narrow range close to this value. The range is usually defined in adults as 7.35-7.45. If blood pH falls below 7.35, the blood becomes too acidic (acidosis). If blood rises above 7.45, the blood is too alkaline (alkalosis). As blood pH decreases, the kidneys will retain bicarbonate (HCO3-) from the glomerular filtrate; therefore, bicarbonate is increased. However, in this case, the increased HCO3- could not compensate for the markedly elevated pCO2 (the respiratory component) and the condition that results is uncompensated respiratory acidosis.

  What condition is indicated by the following blood gas results: Bicarbonate = 32 mmol/L (Normal = 22 - 26 mmol/L); pCO2 = 65 mm Hg (Normal = 35 - 45 mmHg); pH = 7.28 (normal = 7.35 - 7.45)

  A. Healthy condition
  B. Uncompensated metabolic acidosis
  C. Compensated metabolic acidosis
  D. Uncompensated respiratory acidosis
  B. Uncompensated metabolic acidosis

• Question 447:

  This Gram stain is under-decolorized

  This microscopic field is representative of other fields that were observed on a Gram- stained smear. Which of the following describes the quality of the smear?

  

  A. Under-decolorized
  B. Over-decolorized
  C. Sufficiently decolorized
  A. Under-decolorized

• Question 448:

  Bacterial contamination of platelets is most likely because they are stored at room temperature.

  Bacterial contamination is MOST likely in which of the following blood products?

  A. Red Blood Cells
  B. Red Blood Cells Frozen
  C. Platelets
  D. Fresh Frozen Plasma
  C. Platelets

• Question 449:

  All the following characteristics are accurate for the influence of Health Insurance Portability and Accountability Act (HIPAA) except

  A. Establishes a minimum standard for security of electronic health information and the electronic interchange of information
  B. Replaced federal, state, or other laws that grant individuals even greater privacy protections than HIPAA
  C. Directly effects the laboratory information system (LIS)
  D. Covers entities that are free to retain or adopt more protective policies or practices
  B. Replaced federal, state, or other laws that grant individuals even greater privacy protections than HIPAA

• Question 450:

  The Westgard multi-rule 22S describes the scenario where two consecutive data points fall outside +2SD or -2SD. If this occurs, then the run must be rejected. This situation is most likely caused by a systematic error. Which of the following describes the Westgard multi-rule 22S?

  A. Two control data points are within ±2s
  B. One control data point falls outside +2s and a second point falls outside - 2s
  C. Two consecutive data points fall outside +2SD or -2SD
  D. Two consecutive data points fall inside +2s
  E. Two points are within 2SD
  C. Two consecutive data points fall outside +2SD or -2SD

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  Explanation/Reference: