Test Code WBCWD WBC with Differential LAB334
Test Method
Sysmex XN Systems:
- WBC: Impedance counting
- WBC Differential: the instrument makes 3 measurements
(volume,
conductivity and scatter) as each cell passes through the flow
cell. The low frequency impedance measurement defines cell volume.
The high frequency conductivity measurement indicates the internal
conductivity. The light scatter measurement indicates the structure
and shape. An algorithm is applied to determine different cell
populations. - Abs Neutrophils, Abs Lymphocytes, Abs Monocytes, Abs
Eosinophils, Abs Basophils:
Calculated Parameters [Total WBC x (%Diff
Analyte Result/100)] = Absolute Diff Analyte Count
Specimen Requirement
EDTA whole blood is required.
Additional Specimen Collection Information
Whole blood collected in EDTA purple-top tube. The
tube must be at least one quarter full to be acceptable
for
testing.
Capillary specimen collected in EDTA microtube.
The
tube must contain at least 375 mcl (bottom line) to be
acceptable for testing.
Refrigerate the specimen if unable to assay within 12 hours
of
collection for microtainers, and 24 hours for
Vacutainers.
Reference Values
WBC:
0-1 Year, Male and
Female: 6.0-17.5 thou/mcL
-
Critical Value:
- High: > 50.0
- Low: < 1.0
1-2 Years, Male and Female:
6.0-17.0
thou/mcL
-
Critical Value:
- High: > 50.0
- Low: < 1.0
2-4 Years, Male and Female:
5.5-15.5 thou/mcL
-
Critical Value:
- High: > 50.0
- Low: < 1.0
4-6 Years, Male and Female:
5.0-14.5 thou/mcL
-
Critical Value:
- High: > 50.0
- Low: < 1.0
6-8 Years, Male and Female:
4.5-13.5 thou/mcL
-
Critical Value:
- High: > 50.0
- Low: < 1.0
8-10 Years, Male and Female:
4.5-13.5
thou/mcL
-
Critical Value:
- High: > 50.0
- Low: < 1.0
10-16 Years, Male and Female:
4.5-13.0 thou/mcL
-
Critical Value:
- High: > 50.0
- Low: < 1.0
Adult Male and Female: 3.7-11.0
thou/mcL
-
Critical Value:
- High: > 50.0
- Low: < 1.0
Neutrophils: 42.0-74.0%
Lymphocytes: 18.0-44.0%
Monocytes: 5.0-13.0%
Eosinophils: 00-8.0%
Basophils: 0.0-1.0%
Absolute Neutrophils: 1.6-6.1 thou/mcL
-
Critical Value: Low: < 0.5 thou/mcL
Absolute Monocytes: 0.2-0.8 thou/mcL
Absolute Eosinophils: 0.0-0.5 thou/mcL
Absolute Basophils: 0.0-0.1 thou/mcL
Absolute IG: 0.0-0.1 thou/mcL
Performance
Testing is performed Monday through Sunday.
Routine orders: Typically completed within 4 hours after the
specimen arrives at the testing site.
Expedite orders: Typically completed within 1 hour after the
specimen arrives at the testing site.
STAT orders: Typically completed within 30 minutes
after
the specimen arrives at the testing site.
Useful For
Screening tool to confirm a hematologic disorder.
Detect an unsuspected hematologic disorder.
Monitor effects of radiation or chemotherapy.
These counts are used as clinical guides in the diagnosis
and/or
monitoring of many diseases.
LOINC Code Information
6690-2 Leukocytes [#/volume] In Blood By Automated
Count
57023-4 Auto Differential Panel-Blood
CPT Code Information
85004 Blood Counts: automated
differential
WBC count