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White Blood Cell Differential
|Test code||CBCD, WBCDF|
|Performed by||Parnassus, Mission Bay & Mt. Zion Hematology|
|In House Availability||Test available 24 hours per day 7 days per week|
|Container type||Lavender top|
|Amount to Collect||3 mL blood|
|Sample type||EDTA whole blood|
|Preferred volume||3 mL blood|
|Min. Volume||1 mL blood (or 250 µL in a pedi-bullet)|
|Normal range|| Normal Absolute Counts in x109/L (95% confidence interval):
|Critical value||Neutrophils ≤ 1.0 x109/L
Note: Neutrophil counts ≤ 1.0 x109/L are not called if a prior critical was reported in the preceding 24 hours
|Synonyms||Eosnophil; Basophil; Neutrophiil; Granulocyte; Monocyte; Lymphocyte; Leukocyte differential; WBC differential|
|Turn around times||Stat 1 hour, Routine 4 hours|
|Additional information||All differential counts are routinely performed by automated flow cytometry.
Total neutrophils, both mature PMNs and immature forms, are counted. The presence of immature granulocytes/left shift (metamyelocytes and myelocytes) is reported, but not quantitated. Smears with this finding will be reviewed microscopically if a left shift has not already been noted within the previous 72 hours.
A manual differential will be initiated by the laboratory at a separate charge if an automated differential is technically inadequate for the analysis of a particular sample.
Manual differentials also include RBC morphology and platelet morphology.
|Last Updated||1/27/2015 2:17:59 PM|