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Laboratory Test Directory

Differential Count (Updated)

Components

Name Method Department Units
WBC Differential Automated cell or manual count
Core Lab, Hematology

Battery Members

Automated WBC differential unless manual review indicated by Pathologist determined criteria

Specimen Requirements

Whole blood

Container Type Container Size Specimen Volume
Preferred

Purple tube (EDTA)

3 mL 3 mL
Stability

Room temperature - 8 hour(s)
Refrigerated - 24 hour(s)

Alternate

Purple tube (EDTA)

Micro sample tube 0.5 mL
Stability

Room temperature - 8 hour(s)
Refrigerated - 24 hour(s)

Specimen Preparation

  • Do not centrifuge

Reasons for Rejection

  • Not received within specified time frame
  • Centrifuged specimen
  • Over or under filled tube
  • Clotted specimen

Comments

Must be ordered with CBC and Platelet Count. No additional blood is required if ordered with CBC and Platelet Count.

CPT Code

  • 85007