CBC - Overview: CBC with Differential, Blood

Test Catalog

Test ID: CBC    
CBC with Differential, Blood

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

A screening tool to confirm a hematologic disorder, to establish or rule out a diagnosis, to detect an unsuspected hematologic disorder, or to monitor effects of radiation or chemotherapy


These counts are used as clinical guides in the diagnosis or monitoring of many diseases

Reflex Tests Lists test(s) that may or may not be performed, at an additional charge, depending on the result and interpretation of the initial test(s)

Test IDReporting NameAvailable SeparatelyAlways Performed
DIFFRMorphology Eval (special Smear)NoNo

Testing Algorithm Delineates situation(s) when tests are added to the initial order. This includes reflex and additional tests.

For Mayo patients:

A morphology evaluation is performed at an additional charge when the automated 5-part differential is invalid and/or when abnormal results are identified upon microscopic examination.


A consultant evaluation is performed at an additional charge when pathologist expertise is needed for clinically significant diagnosis.


For Mayo Medical Laboratories patients:

An approval will be requested before the morphologic evaluation is ordered due to the additional charge.

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

RF/DC (Radio Frequency/Direct Current) Detection Method/Hydro Dynamic Focusing (DC Detection), Flow Cytometry Method (Using a Semiconductor Laser), and Sodium Lauryl Sulfate (SLS) Hemoglobin Method

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


Reporting Name A shorter/abbreviated version of the Published Name for a test; an abbreviated test name

CBC with Differential, B

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

CBC (Complete Blood Count)
Cell Indices
Hemoglobin Concentration
Hemoglobin, Blood
Leukocyte Count
Platelet Count
RBC Sizing
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