Test Directory

Test Code
BAL48
Test Name
Bronchoalveolar Lavage CD4/CD8 Ratio
Included Tests
  • Markers Evaluated: CD3, CD4, CD8, and CD45
  • CD4/CD8 Ratio will be reported
Expected Turnaround Time
2 - 4 days
Clinical Utility
This panel can be useful to differentiate sarcoidosis and hypersensitivity pneumonitis from other causes of interstitial lung disease.
Specimen and Container Info

Specimen Type: Bronchoalveolar Lavage (BAL)

Preferred Collection Container: Sterile Container

Alternate Collection Container: Lavender Top (EDTA)

Desired Specimen Volume: 5 mL

Minimum Specimen Volume: 1 mL

Processing and Submission Instructions

 If collecting lavages from more than one site per patient, label container with applicable site.

Transport Instructions

Transport to the laboratory refrigerated.

Stability Requirements

Refrigerated

72 hours
Causes for Rejection
  • Frozen specimens
  • Fixed specimens
  • Incorrect specimen type
  • Incorrect collection container
Methodology
Flow Cytometry
Performing Location
Roble Road Core Laboratory
Alternate Names
  • CD4/CD8 for Bronchoalveolar Lavage by Flow Cytometry
  • BAL CD4/CD8 Ratio
  • Bronchial Washings CD4/CD8 Ratio
Testing Schedule
Routine, Monday - Friday no holidays