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Questions and Answers
What is the main reason for centrifuging CSF at high speed for 10 minutes?
What is the main reason for centrifuging CSF at high speed for 10 minutes?
- To concentrate cells in a small volume for counting (correct)
- To separate the different types of WBCs
- To increase the cell count
- To preserve the cell morphology
What is the characteristic of a normal adult's CSF differential count?
What is the characteristic of a normal adult's CSF differential count?
- 50% lymphocytes and 50% monocytes
- 70% lymphocytes and 30% monocytes (correct)
- 40% lymphocytes and 60% monocytes
- 30% lymphocytes and 70% monocytes
What is the purpose of using a Romanowsky stain in CSF examination?
What is the purpose of using a Romanowsky stain in CSF examination?
- To identify bacteria and fungi
- To determine the protein content of CSF
- To distinguish between different types of WBCs (correct)
- To detect the presence of blood in CSF
What is the advantage of using a cytocentrifuge in CSF examination?
What is the advantage of using a cytocentrifuge in CSF examination?
Which of the following microbiological tests is used to detect bacterial and cryptococcal antigens?
Which of the following microbiological tests is used to detect bacterial and cryptococcal antigens?
What is the reason for performing a Gram's smear on CSF?
What is the reason for performing a Gram's smear on CSF?
What is the primary purpose of centrifuging a 50 mL fluid specimen in a laboratory setting?
What is the primary purpose of centrifuging a 50 mL fluid specimen in a laboratory setting?
What type of stain is typically used for air-dried smears?
What type of stain is typically used for air-dried smears?
What is the advantage of preparing a cell block from a residual sample?
What is the advantage of preparing a cell block from a residual sample?
What is the primary component of a benign effusion fluid?
What is the primary component of a benign effusion fluid?
What is the purpose of treating the residual sediment with plasma and thrombin in cell block preparation?
What is the purpose of treating the residual sediment with plasma and thrombin in cell block preparation?
What is the primary use of polymerase chain reaction in this laboratory setting?
What is the primary use of polymerase chain reaction in this laboratory setting?
What is the term for an increase in cell count in CSF?
What is the term for an increase in cell count in CSF?
In which condition is thick viscous CSF typically seen?
In which condition is thick viscous CSF typically seen?
What is the purpose of microscopic examination of all CSF samples?
What is the purpose of microscopic examination of all CSF samples?
What is the significance of dilution factor in cell count calculation?
What is the significance of dilution factor in cell count calculation?
What is a common cause of increased cell count in CSF?
What is a common cause of increased cell count in CSF?
How is the total leukocyte count calculated in an undiluted CSF sample?
How is the total leukocyte count calculated in an undiluted CSF sample?
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