ASCP Specialist in Cytometry (SCYM) Practice Exam

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• What does the CD45 marker generally identify?
• What is necessary to optimize the analysis of flow cytometric data according to the fetal hemoglobin assay procedures?
• Which of the following statements is true regarding the sheath fluid in a flow cytometer?
• The CD14 marker is dimly expressed in which type of cells?
• When a deviation from the Validation Plan occurs, what is required in the Validation Report?
• What should follow the calibration of a cytometer to ensure proper performance?
• What is emitted when the laser interacts with a cell at the interrogation point?
• What is a syringe pump used for in a differential pressure-based system?
• What does a voltage pulse indicate when a cell passes the laser beam?
• What does the term 'CV' refer to in the context of Quality Assurance in flow cytometry?
• What is a characteristic of neutral density filters?
• Which type of analysis method is essential for determining the effect of anticancer treatments on cell populations?
• When working with genetically modified materials, what biosafety practices must be utilized?
• How often should the routine maintenance of aerosol management hardware be documented?
• In flow cytometry, why might distinguishing populations of cells be more complex in heterogeneous samples?
• What role do reference ranges play in flow cytometric methods?
• Which parameter is important for determining minimal residual disease (MRD) in leukemia?
• What does increased granularity in a cell indicate regarding side scatter measurements?
• What is generated from the binning process of voltage pulse data?
• What is critical to exclude dead cells in flow cytometry analysis?
• What type of fluorophore should be used for low-abundance antigens?
• Which characteristic is assessed using side scatter (SSC) in flow cytometry?
• What characteristic size range do microvesicles typically fall into?
• Which amplification type is often used to better differentiate dim signals?
• When developing a panel for flow cytometry, what is one critical factor to consider?
• What is the main focus of the ISO 9000 documents?
• What is the wavelength produced by an air-cooled argon laser?
• What technology is preferred for isolating pure and viable cells through magnetic separation?
• Who is responsible for reporting incidents related to potential exposure in laboratories?
• What typically regulates the second pressure in a differential pressure-based flow cytometer?
• What is the purpose of implementing preventive maintenance in flow cytometry?
• During which process do immature B cells release their hold on stromal cells in the bone marrow?
• What is typically not a characteristic of solid state lasers in cytometry?
• What is essential to assess regarding specimen stability in flow cytometry?
• What aspect of laboratory operation is not explicitly addressed in a quality management system?
• Which cell type is the primary focus of fetal hemoglobin assays for quantifying fetal red cells?
• Which type of cells can be identified using the TdT marker?
• What action should be taken if outliers are identified during statistical analysis in the Validation Report?
• What type of flow cytometer is currently dominating the market?
• What is a critical safety consideration when using lasers in cytometry instruments?
• What organization's standards are recognized by ISO for the manufacture of equipment?
• What is one of the main benefits of implementing ISO standards in laboratories?
• Which ISO standard specifically addresses medical laboratories?
• What determines the effectiveness of signal collection in flow cytometry?
• What type of samples are used for Method Validation?
• What is the purpose of a Fluorescence Minus One (FMO) control in flow cytometry?
• How is specificity defined in the context of flow cytometry?
• Which marker is associated with activated T Cells?
• What will typically cause noise in cytometric measurements?
• In the context of solid organ transplant, what does a positive crossmatch indicate?
• What is the purpose of murine monoclonal antibodies conjugated to fluorescein isothiocyanate in a fetal hemoglobin assay?
• What is the purpose of optical filters in flow cytometry?
• Which statement best describes a shortpass filter?
• Which cell types are identified by the CD5 marker?
• Which term best describes the usage of fluorophores in flow cytometry?
• Which type of filters are used in flow cytometers to reflect longer wavelengths while passing shorter wavelengths?
• What are polarization filters primarily used for in flow cytometry?
• What type of tube is recommended for storing first pull bone marrow aspirate?
• What should be included when sending a sample collected in a yellow top (ACD) tube?
• What is the definition of a "rare event" in flow cytometry?
• How does flow cytometry operate at the cellular level?
• What document set provides guidance for quality in laboratory diagnostics?
• Which marker is used to denote B Cells apart from anti-lambda?
• For which application is density gradient centrifugation most commonly utilized?
• What is the primary application of CD34+ absolute counts in flow cytometry?
• What is the primary purpose of lenses in a cytometer?
• What is an essential tool used for determining target value ranges during cytometer measurements?
• Which type of cells express the CD8 marker?
• Which of the following methods enhances the performance of a multiplex assay?
• For microvesicle analysis, what is a common pitfall that researchers must account for?
• What is the primary role of flow cytometry in stem cell research?
• Which marker is expressed on monocytes and polymorphonuclear cells?
• Which cells are associated with the CD19 marker?
• Which two properties are used initially in gating during flow cytometry analysis?
• What is required to determine PMT sensitivity during cytometer calibration?
• What is the first step in the common assay for cytokine detection using flow cytometry?
• What method is commonly used to investigate and quantify populations of interest in flow cytometry?
• Which phase of the cell cycle can be identified using a DNA-specific stain in flow cytometry?
• What is often the first indication of chronic granulomatous disease?
• What does laboratory quality control aim to detect and correct?
• What is a requirement for the use of respiratory protection in the laboratory?
• What is the objective of using multiple markers in a flow cytometry experiment?
• Which of the following is a result of effective communication in laboratory operations?
• Which of the following is not a residue at which proteins can be phosphorylated?
• Which ISO standard can be applied broadly beyond laboratories?
• Which method is commonly used for isolating specific cell populations from whole blood?
• What is the maximum time limit for sending intact whole blood collected in a green top tube?
• In a multiplex assay, what method is used to measure multiple analytes simultaneously?
• How should closed tubes be vortexed when handling samples?
• What is the primary purpose of a biosafety assessment in a laboratory setting?
• What property is critical for dichroic mirrors when reflecting light in flow cytometry?
• What is the optimal storage medium for bone marrow biopsy or fine needle aspirate to maintain cell viability?
• Which type of scatter is proportional to the cell size in a cytometry experiment?
• What is the role of compensation in panel design during flow cytometry?
• In the context of a quality management system, what aspect ensures that processes are performed consistently and effectively?
• What type of laser produces light at multiple specified wavelengths including 355, 405, and 488 nm?
• Which body fluid type can be included in a sterile, leak-proof container for cytological analysis?
• What is a key characteristic of CD4 markers when used for immunophenotyping?
• Which of the following roles does not fall under the responsibilities of Operation Research Programs?
• What must be completed and approved by the flow cytometry laboratory manager before starting new experiments?
• What does the pulse area of a voltage pulse represent?
• For successful immunophenotypic analysis, what is the minimum cell count required in a sample?
• What component surrounds the sample stream in hydrodynamic focusing?
• Which test can confirm a diagnosis of chronic granulomatous disease?
• Which group is responsible for overseeing and reviewing internal disputes related to laboratory operations?
• What process follows the amplification of the voltage pulse in a flow cytometer?
• Why is documentation crucial in a regulated environment for flow cytometry?
• What is the recommended density of media to isolate mononuclear cells from blood samples?
• What is the role of differential pressure in flow cytometry?
• What is the primary purpose of a Method Validation Plan?
• In the Standard Operating Procedure (SOP), what is required regarding assay reagents?
• Which shape is traditionally associated with the flow cell in hydrodynamic focusing?
• Which term describes the minimum wavelength below which light is transmitted by a short wavelength pass filter?
• What principle does flow cytometry data analysis rely on?
• Which factor can lead to power loss when using optical fibers?
• What is the primary concern when evaluating instrument carryover in flow cytometry?
• What does Limited Assay Validation primarily represent?
• What type of cells does the CD16 marker identify?
• What cell type is identified by the CD34 marker?
• What is a disadvantage of optical fibers in laser applications?
• What is the use of density plots in flow cytometry?
• Which element is NOT typically included in the Validation Report?
• What is the primary purpose of backgating in flow cytometry?
• What does the CD10 marker indicate?
• Why is precision important in flow cytometry validation?
• What occurs when the laser light passes through the optical gel in a cytometer?
• What is essential for phosphoprotein antibodies in resolving specific changes?
• Which biosafety containment level is appropriate for Risk Group 2 materials?
• Which light source is most commonly used in modern flow cytometry instruments?
• Which protocol is NOT part of instrument optimization in flow cytometry?
• What is the typical parameter for measuring cell size in flow cytometry?
• Which of the following statements is true regarding aerosol control during sorting?
• Which procedure is prohibited when handling potentially infectious samples?
• Which marker is associated with T helper cells?
• What is the maximum time frame for sending a bone marrow aspirate sample for analysis?
• Which class of cell adhesion molecules (CAMs) is known for mediating cell-cell adhesion through cadherins?
• What minimum personal protective equipment (PPE) is required for laboratory operators?
• When preparing fresh tissue for analysis, what is the required storage medium for optimal cell viability?
• What is the characteristic function of a longpass filter?
• What should be recorded as part of Quality Assurance for a flow cytometer?
• What type of lymphocytes can be recognized by the anti-kappa marker?
• What defines the analytical specificity of an assay?
• Which of the following is a responsibility of Operation Research Programs?
• What does the ISO/IEC 17025:2005 standard specifically assess?
• What effect does low differential pressure have on sample flow?
• Which of the following markers is specific for T Cells and NK Cells?
• Which marker indicates the presence of immature lymphocytes?
• Which of the following is essential to include in the Method Validation Plan?
• What is the role of dichroic filters positioned at a 45-degree angle in a flow cytometer?
• What cell type is indicated by the CD20 marker?