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Differential and Total WBC Count
MessageLabCorp
Test Code
15173
Alias/See Also
"Differential
Leukocyte/WBC Count, Peripheral Blood
WBC With Diff, Total and Differential
White Blood Cell Morphology"
Leukocyte/WBC Count, Peripheral Blood
WBC With Diff, Total and Differential
White Blood Cell Morphology"
CPT Codes
85004; 85048
Includes
"Total WBC plus relative (%) and absolute counts of all white blood cell types
"
"
Preferred Specimen
"Whole blood
"
"
Minimum Volume
"0.5 mL
0.5 mL
"
0.5 mL
"
Instructions
"Maintain specimen at room temperature up to 24 hours. Refrigerate up to 48 hours.
"
"
Transport Container
"Lavender-top (EDTA) tube
"
"
Transport Temperature
"Temperature Period
Room temperature 1 day
Refrigerated 3 days
Frozen Unstable
Freeze/thaw cycles Unstable
"
Room temperature 1 day
Refrigerated 3 days
Frozen Unstable
Freeze/thaw cycles Unstable
"
Specimen Stability
"Temperature Period
Room temperature 1 day
Refrigerated 3 days
Frozen Unstable
Freeze/thaw cycles Unstable
"
Room temperature 1 day
Refrigerated 3 days
Frozen Unstable
Freeze/thaw cycles Unstable
"
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
"Hemolysis; clotted specimen; tube not filled with minimum fill volume; specimen diluted or contaminated with IV fluid; specimen drawn in any anticoagulant other than EDTA; transfer tubes with whole specimen received with plasma removed (plasma used for o
Methodology
"Automated cell counter "
