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Reticulocyte Count
Test Code793
CPT Codes
85045
Includes
Reticulocyte Count, Automated
Reticulocyte Count, Absolute
Reticulocyte Count, Absolute
Preferred Specimen
1 full whole blood EDTA (lavender-top) tube
Minimum Volume
Microtainer 0.5 mL • 1 mL whole blood EDTA tube
Other Acceptable Specimens
Whole blood from a full EDTA (tan-top) tube
Instructions
Maintain specimen at room temperature. If multiple draw, collect EDTA (lavender-top) tube last.
Note: If drawn with lead testing, EDTA (tan-top) is required.
Note: If drawn with lead testing, EDTA (tan-top) is required.
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 48 hours
Refrigerated: 48 hours
Frozen: Not acceptable
Refrigerated: 48 hours
Frozen: Not acceptable
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis • Clotted • Specimens that are past stability and those which appear to have had plasma removed
Methodology
Electronic Cell Sizing and Counting/Cytometry/Microscopy
Setup Schedule
Set up: Daily; Report available: 1 day
Limitations
Large platelets, parasites, howell jolly bodies, or cold agglutins may cause inaccurate results.
Reference Range
See Laboratory Report
Clinical Significance
Use in evaluating erythropoietic activity.
