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Test Code 0255703 T- and B-Cell Quantitation by Flow Cytometry, Bronchoalveolar Lavage

Additional Codes


Mayo Test ID


Method Name

Fluorescent Flow Cytometry

Performing Laboratory

Mayo Medical Laboratories in Rochester

Specimen Required

For Local Accounts Only

Specimen must be tested within 24 hours of collection.


Container/Tube:  50-mL conical tube

Specimen Volume:  4 mL

Collection Instructions:

1.  Collection of the specimen in the afternoon is preferred; testing will be performed by 2 p.m. the following day.

2.  Ship specimen overnight.

Additional Information:

1.  Collection date is required.

2.  For serial monitoring, we recommend that specimen collections be performed at the same time of day.

Reject Due To

Hemolysis    Mild OK; Gross reject


Warm reject; Cold reject
Lipemia Mild OK; Gross reject
Icterus NA
Other Specimens >24 hours old


Reference Values

No established reference values.

Day(s) and Time(s) Performed

Monday through Sunday; Continuously to 2 p.m.

CPT Code Information

86355-B cells, total count

86357-Natural killer cells, total count

86359-T cells, total count