Test Catalog

Test ID: IABCS    
B-Cell Phenotyping Profile for Immunodeficiency and Immune Competence Assessment, Blood

Useful For Suggests clinical disorders or settings where the test may be helpful

Screening for common variable immunodeficiency (CVID) and hyper-IgM syndromes


Assessing B-cell subset reconstitution after stem cell or bone marrow transplant


Assessing response to B-cell-depleting immunotherapy


Identifying defects in transmembrane activator and calcium modulator and cyclophilin ligand (CAML) interactor (TACI) and B-cell-activating factor receptor (BAFF-R) in patients presenting with clinical symptoms and other laboratory features consistent with CVID

Profile Information A profile is a group of laboratory tests that are ordered and performed together under a single Mayo Test ID. Profile information lists the test performed, inclusive of the test fee, when a profile is ordered and includes reporting names and individual availability.

Test IDReporting NameAvailable SeparatelyAlways Performed
TBBSQN Lymphocyte Subsets: T, B, and NKYesYes
IABCImmune Assessment B Cell Subsets, BNoYes

Reflex Tests Lists tests that may or may not be performed, at an additional charge, depending on the result and interpretation of the initial tests.

Test IDReporting NameAvailable SeparatelyAlways Performed
CVIDCVID Confirmation Flow PanelYesNo

Testing Algorithm Delineates situations when tests are added to the initial order. This includes reflex and additional tests.

If immune assessment B-cell subsets test is abnormal, then confirmation will be performed at an additional charge.


When multiple specimen types are required to perform a panel of tests, the laboratory will perform the tests for which the appropriate specimen type was received and the laboratory will cancel those for which the appropriate specimen was not received. Please be advised that this may change the degree of interpretation received with the report. If only the refrigerate EDTA sample is received, this test will be canceled and converted to RBCS / Relative B-Cell Subset Analysis Percentage which provides the relative B-cell subset values without quantitation.

Method Name A short description of the method used to perform the test

TBBS: Flow Cytometry

IABC: Fluorescent Flow Cytometry

NY State Available Indicates the status of NY State approval and if the test is orderable for NY State clients.


Reporting Name Lists a shorter or abbreviated version of the Published Name for a test

Immune Assessment B Cell Subsets, B

Aliases Lists additional common names for a test, as an aid in searching

B Cell
B-cell CVID
CD19 Count, Flow Cytometry
CD56 Count, Flow Cytometry
Mature B-cell
Memory B-cell
Quantitative CD4 and CD8
Transitional B-cell
Acquired Immune Deficiency Syndrome (AIDS)
B and T Lymphocyte Surface Marker
B Cell Assessment
B Cell Function
B Cell Immune Competence
B Cell Immunodeficiency
B Cell Phenotype
B Cell Phenotyping
B Cell Subset
B-cell Assessment
B-cell Function
B-cell Immune Competence
B-cell Immunodeficiency
B-cell Phenotype
B-cell Phenotyping
B-cell Subset
CD3 Count, Flow Cytometry
CD4 Count, Flow Cytometry
CD8 Count, Flow Cytometry
Common Variable Immunodeficiency
Flow Cytometry, T- and B-cells
Helper Suppressor Ratio
Humoral Immunodeficiency
IgM Memory B-cell
Immune Assessment
Immune Competence
Immune Reconstitution
Immune Status, Flow Cytometry
Immunodeficiency Panel, Flow Cytometry
Immunophenotyping-CD4 Count, Flow Cytometry
Kidney Transplant
Lymphocyte Surface Marker
Suppressor Helper Ratio
T and B Lymphocyte Surface Marker
T- and B-cell Quantitation by Flow Cytometry
T4/T8 Helper Suppressor Ratio
T-helper/T-suppressor Ratio
Variable Immunodeficiency
QN Lymphocyte Subsets: T, B, and NK