Resources

Differential - Peripheral Blood, Manual

Message
Performed on-site
Hematology


Test Code
MDIFF (not orderable)


Alias/See Also
Manual Differential
Differential
Peripheral Blood Smear
WBC Differential


Preferred Specimen
Lavender Top (EDTA), Whole Blood


Instructions
Gently invert tube 8-10 times immediately after drawing to prevent clotting


Transport Temperature
Room Temperature


Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Clotted
Drawn in expired tube
Hemolyzed, icteric or lipemic
Contaminated


Setup Schedule
Sunday through Saturday, continuously


Report Available
Less than 4 hours


Clinical Significance
The Differential distribution of white blood cells, when correlated with absolute white cell count, will identify imbalances between cell production, cell release, cell survival and/or cell loss. This information
increases the accuracy and specificity of diagnosis based on pathogenesis and is also used to monitor the effectiveness
of therapy.




The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.