Laboratory Services

Bronchoalveolar Lavage Differential

Print this page

Updated Test Information:

Test Description
Bronchoalveolar Lavage Differential

Bronchoalveolar lavage, BAL, lavage

Test ID
General Information

Bronchoalveolar lavage specimens - differential ONLY 

Specimen Type

Bronchoalveolar lavage

Specimen Requirements

Sterile, capped container

Specimen Collection / Processing Instructions

10-20mL preferred sample volume. Samples must arrive within 24 hours of collection. Only send specimens Monday through Thursday.
Do not send specimens the day before a holiday.

Additional Processing Details

Store refrigerated. Transport to lab as soon as possible


Refrigerated: 24 hours
Room temperature: Unacceptable
Frozen: Unacceptable

Unacceptable Specimen Conditions

Improper labeling, quantity not sufficient for analysis, specimen received frozen or room temperature, specimen received more than 24 hours old, specimen collected in improper container, clotted specimen

Department (code)



Manual differential

Estimated TAT

0-2 days

Testing Schedule

Monday - Friday

Test Includes

% neutrophil, % lymphocyte, % macrophage, % eosinophil, % basophil, % squamous epithelial, % bronchial epithelial, color, clarity, bacteria, fungi

CPT Code(s)


Minimum Sample Volume


Performing Lab

Incyte Diagnostics

LOINC Code(s)