Question 46
Selectable Answer
Which of the following organizations now provides the certification exam for laboratory professionals?
Answer:
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Question 47
Selectable Answer
In an alkaline medium, potassium ferricyanide oxidizes hemoglobin to methemoglobin. Further reaction with potassium cyanide produces cyanmethemoglobin which has a maximum absorbance at 540 nm. Color intensity is proportional to total hemoglobin concentration, which is how the hemoglobin levels are measured.
Hematology
In the hemoglobin methodology using potassium ferricyanide the following measurable reaction occurs:
Hematology
In the hemoglobin methodology using potassium ferricyanide the following measurable reaction occurs:
Answer:
Question 48
Selectable Answer
This drawing depicts beta thalassemia minor B+/B. In Beta thalassemia minor B+/B, one beta gene locus is partially deleted or inactive.
Hematology
This drawing depicts which beta chain genotype?
Hematology
This drawing depicts which beta chain genotype?
Answer:
Question 49
Selectable Answer
What is the best description of the purpose of the Commission on Office Laboratory Accreditation (COLA) pertaining to the clinical laboratory?
Answer:
Question 50
Selectable Answer
The image shown in this question is depicting a rosette formation. Here the red blood cells are surrounding and adhering to the outside of the white blood cell.
What is the best description of the phenomenon seen in this illustration?
What is the best description of the phenomenon seen in this illustration?
Answer:
Question 51
Selectable Answer
The National Heart, Lung, and Blood Institute initiated the National Cholesterol Education Program (NCEP) in 1985. The goal was to reduce the number of Americans with elevated cholesterol and thus reduce illnesses and deaths in the United States due to coronary heart disease. Three adult treatment panels have been published since then with clinical practice guidelines for managing cholesterol levels in adults.
The most recent panel, Adult Treatment Panel III (ATP III), was published in 2001 and updated in 2004. The NCEP: ATP III also includes criteria for the diagnosis of metabolic syndrome.
Select the set of laboratory assays that are utilized in the NCEP: ATP III criteria for metabolic syndrome diagnosis.
The most recent panel, Adult Treatment Panel III (ATP III), was published in 2001 and updated in 2004. The NCEP: ATP III also includes criteria for the diagnosis of metabolic syndrome.
Select the set of laboratory assays that are utilized in the NCEP: ATP III criteria for metabolic syndrome diagnosis.
Answer:
Question 52
Selectable Answer
VLDL transports endogenous lipids, whereas chylomicrons transport exogenous (dietary) lipids. Cholesterol is transported by HDL and LDL.
The function of the very low density lipoproteins (VLDL) is to transport:
The function of the very low density lipoproteins (VLDL) is to transport:
Answer:
Question 53
Selectable Answer
The approximate volume of CSF in an adult is 90-150 mL.
What is the approximate volume of spinal fluid in an adult?
What is the approximate volume of spinal fluid in an adult?
Answer:
Question 54
Selectable Answer
HbsAg is positive in acute and chronic Hepatitis B infections, since the antigen is found on the actual surface of the virus. HbeAg is present in the blood when the hepatitis B viruses are replicating, indicating an active infection. Anti-Hbc IgM is present due to the immune response to the presence of the hepatitis core antigen and indicates an acute infection. Anti-HBs is generally interpreted as indicating recovery and immunity from hepatitis B virus infection, according to the CDC.
Given the following results, what is the immune status of the patient?
HbsAg: positive
HbeAg: positive
Anti-HBc IgM: positive
Anti-HBs: negative
Given the following results, what is the immune status of the patient?
HbsAg: positive
HbeAg: positive
Anti-HBc IgM: positive
Anti-HBs: negative
Answer:
Question 55
Selectable Answer
Bacterial contamination can manifest itself in several ways including: the presence of clots, darker purple-black color of blood unit, unit can appear cloudy, hemolysis may be present.
During routine inspection, a unit of unexpired blood was noticed to have a black color with numerous small clots.
What is the likely cause for this observation?
During routine inspection, a unit of unexpired blood was noticed to have a black color with numerous small clots.
What is the likely cause for this observation?
Answer:
Question 56
Selectable Answer
Secondary granules, also known as specific granules first appear in the myelocyte stage next to the nucleus. In neutrophils this is termed the "dawn of neutrophilia".
What is one of the main characteristics of secondary granules in the neutrophilic granulocyte cytoplasm?
What is one of the main characteristics of secondary granules in the neutrophilic granulocyte cytoplasm?
Answer:
Question 57
Selectable Answer
Coumarin derivatives inhibit the vitamin K dependent Factors (II, VII, X) which can be measured with the PT and monitored frequently with the INR assay.
Hematology
Warfarin-based (coumarin derivative) oral anti-coagulant therapy is commonly monitored with :
Hematology
Warfarin-based (coumarin derivative) oral anti-coagulant therapy is commonly monitored with :
Answer:
Question 58
Selectable Answer
Mrs. Jones, a diabetic, is admitted to the hospital on November 25th. It appears that she has had an AMI but did not feel the severe chest pain because of diabetic neuropathy. She has not felt well since November 20th and her physician believes she possibly had an AMI on November 20th.
Assuming that the infarct was uncomplicated, which of the following cardiac biomarkers would most likely still be elevated and would assist in an AMI diagnosis?
Assuming that the infarct was uncomplicated, which of the following cardiac biomarkers would most likely still be elevated and would assist in an AMI diagnosis?
Answer:
Question 59
Selectable Answer
This is the total magnification of the high dry objective lens.
Answer:
Question 60
Selectable Answer
Listeria monocytogenes is the correct answer. The motility agar is showing motility at the top of the tube, but not deeper; typical of this catalase-positive, gram positive bacillus. Streptococcus agalactiae would be catalase negative and a coccus. Erysipelothrix rhusiopathiae would be H2S-positive and catalase negative. Escherichia coli is a gram negative bacillus.
This Gram-positive bacillus grew as a diffusely beta-hemolytic colony from a newborn. It was catalase positive and had tumbling motility on a hanging drop preparation. This is how it appeared on triple sugar iron agar and motility medium.
What is the most likely diagnosis?
This Gram-positive bacillus grew as a diffusely beta-hemolytic colony from a newborn. It was catalase positive and had tumbling motility on a hanging drop preparation. This is how it appeared on triple sugar iron agar and motility medium.
What is the most likely diagnosis?
Answer:
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