Complete Blood Count with Differential
CBCAD, CBCWD
Testing Information
Sample Type
Whole Blood
Test Codes
631000
CPT Code
85025
Testing Area
Core Lab - Hematology
Test Methodology
Sysmex XN - Impedance and Flow Cytometry
Reference Range
The reference ranges of the CBC with differential test are extensive and vary based on patient demographics. Please contact the laboratory for a full list of ranges.
Expected Turnaround Time
Results Available 24 hours from Receipt at the laboratory.
Specimen Collection Criteria
Collect one lavender top EDTA tube (minimum whole blood: 1 mL). Invert 6-8 times to ensure anticoagulant is well mixed with the blood. Refrigerate while waiting for specimen to be picked up.
Rejection Criteria
Clotted specimens, grossly hemolyzed specimens, quantity not sufficient, improperly labeled
Specimen Validity and Retention
Lavender EDTA Tubes:Room Temperature (20-25°C): 8 HoursRefrigerated (2-8°C): 24 hoursFrozen (-20°C or greater): UnacceptableSpecimens retained for 7 days after testing
Courier Transportation
Transport lavender tube refrigerated (2-8°C)
Clinical Utility
Complete blood counts and differentials are useful screening tests that can assess patients for anemia, infection, and numerous hematological disorders.
