Disease Diagnosis: Specimen Collection Procedure
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Questions and Answers

What is the first step in the diagnosis of a disease?

  • Obtaining the specimen promptly to prevent contamination.
  • Transporting the specimen to the laboratory as quickly as possible.
  • Choosing the appropriate specimen based on lab personnel preferences.
  • Selecting the appropriate specimen based on the pathogenesis of the infection. (correct)

    • How should urine specimens be collected to avoid contamination?

  • By using a rectal swab if a plastic container is not available.
  • By collecting a mid-stream specimen with precautions. (correct)
  • By rushing the collection process to transport it promptly.
  • In a dirty container to ensure accurate labeling.

    • What is the recommended method for collecting sputum specimens?

  • Collecting it any time of day in a narrow-mouthed container.
  • Collecting a morning specimen in a wide-mouthed container. (correct)
  • Using a rectal swab for collection.
  • Collecting it in the afternoon in a wide-mouthed container.

    • How should blood culture specimens be handled for laboratory testing?

    <p>Aseptically collecting blood and culturing it in screw-capped bottles.</p> Signup and view all the answers

    What should be added to serous fluids to prevent clotting during collection?

    <p>Citrate</p> Signup and view all the answers

    In what form should blood be obtained when needed for serological tests?

    <p>Allowed to clot or centrifuged to obtain serum.</p> Signup and view all the answers

    What is a common method used for diagnosing a bacterial infection by detecting the causal organism microscopically in a stained smear?

    <p>Direct demonstration</p> Signup and view all the answers

    How is the identification of bacteria isolated by culture NOT typically determined?

    <p>Colonial and microscopic morphology</p> Signup and view all the answers

    Which of the following methods is NOT used for bacterial typing within a species according to the text?

    <p>Recognition of enzymes</p> Signup and view all the answers

    What is the basis of identification for some bacteria, with a specific example mentioned in the text?

    <p>Recognition of enzymes</p> Signup and view all the answers

    What is one method used for bacterial typing by comparing the plasmids contained by different bacterial strains?

    <p>Plasmid typing</p> Signup and view all the answers

    Which test is of great value in detecting antibodies specific for the causal organism in patients with infections where the organism is difficult to culture?

    <p>Serologic testing</p> Signup and view all the answers

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