Specimen Collection and Processing

Collection Tubes (continued)

The samples from each tube are used for specific tests:

  • The first tube may also be used for serological testing.
  • The second tube is used for gram stain and culture.
  • The third tube is used for the cell count and differential.
  • The fourth tube is used for cytological examinations or other tests which may be needed to further characterize abnormal cells.

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