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HelpTest Code CD34 CD34
Aliases (synonyms)
Stem Cell Enumeration
Useful For
Enumeration of viable dual positive CD45+/CD34+ hematopoietic stem cell populations.
Patient Preparation
No special patient preparation required
Minimum Volume
2 mL
Container
Purple (EDTA)
Preferred Specimen
Peripheral blood, leukapheresis product, bone marrow, cord blood
Acceptable Specimens
NaHep, ACD-A, CPD
Reference or Target Ranges
| Reference Ranges | Normal RR: 0-7 cells/μL |
| Lower Limit of Detection | 0 cells/μL |
| Upper Limit of Detection | 1000 cells/μL |
Reportable Units
cells/μL
Critical Value
Not defined for this assay
Reasons for Rejection
| Hemolysis Threshold | 10 mg/mL |
| Icterus Threshold | 400 mg/mL |
| Lipemia Threshold | 57 mg/mL |
| Other |
Specimen Stability
| Ambient | 24 hours |
| Refrigerated (4°C to 8°C) | (preferred) 24 hours |
| Frozen(-40°C to 0°C) |
Performance Information
| Days and Time Performed | Monday – Friday 9AM – 5PM |
| Expected Turn Around Time | 1 hour |
| Stat Availabilty | No |
| Performing Bench | UH BD Lyric |
| Methodology/Method Description | Flow Cytometric evaluation, Panel Components (CD45, CD34, 7 AAD) |
CPT Codes
86356, 86367