| Ordering Code | 556 |
|---|---|
| Test Name | Reticulocyte Count |
| Alias | Retic Count |
| Preferred Specimen | Whole Blood |
| Preferred Container | EDTA, K2 (Lavender) |
| Other Specimen/Container | Whole Blood in EDTA, K2 Microtainer (Lavender) |
| Optimum Volume | FULL DRAW |
| Collection Instructions | Do NOT collect in 7 mL EDTA tube Mix well. |
| Handling Instructions | Refrigerate specimen if transport time > 24 hours Hand mix ONLY. Do NOT mix on mechanical rocker/mixer. |
| Transport Requirements | Oahu: Ambient Airline: Refrigerated |
| Specimen Stability | Ambient: 24 Hours Refrigerated: 48 Hours |
| Rejection Criteria | Frozen, Clotted, Contaminated, Hemolyzed, Over filled tube, Under filled tube, Specimen older than stability limits. |
| Avail. Stat | YES |
| Analytic Time | 1 Day |
| Methodology | Automated cell counter or examination of New Methylene Blue stained slide. |
Reference range(s)
The reference ranges listed below are valid on this date of June 4, 2025.
| Component | Age | Male Norm | Male Critical Low | Male Critical High | Female Norm | Female Critical High | Female Critical Low | Units | Add'l info |
|---|---|---|---|---|---|---|---|---|---|
| Reticulocyte Count | >=18Y | 0.64-2.26 | 0.64-2.26 | % | |||||
| Reticulocyte Count | 12Y-17Y | 0.90-1.49 | 0.90-1.49 | % | |||||
| Reticulocyte Count | 6Y-12Y | 0.98-1.94 | 0.98-1.94 | % | |||||
| Reticulocyte Count | 2Y-6Y | 0.82-1.45 | 0.82-1.45 | % | |||||
| Reticulocyte Count | 6M-2Y | 0.99-1.82 | 0.99-1.82 | % | |||||
| Reticulocyte Count | 2M-6M | 1.55-2.70 | 1.55-2.70 | % | |||||
| Reticulocyte Count | 1M-2M | 2.12-3.47 | 2.12-3.47 | % | |||||
| Reticulocyte Count | 3D-1M | 1.06-2.37 | 1.06-2.37 | % | |||||
| Reticulocyte Count | 0-3D | 3.47-5.40 | 3.47-5.40 | % | |||||
| Retic Absolute | ALL | See report. | |||||||
| Immature Retic Fraction | >=18Y | 2.3-13.4 | 3.0-15.9 | % | |||||
| Immature Retic Fraction | 12Y-17Y | 9.0-18.7 | 9.0-18.7 | % | |||||
| Immature Retic Fraction | 6Y-12Y | 8.9-24.1 | 8.9-24.1 | % | |||||
| Immature Retic Fraction | 2Y-6Y | 8.4-21.7 | 8.4-21.7 | % | |||||
| Immature Retic Fraction | 6M-2Y | 11.4-25.8 | 11.4-25.8 | % | |||||
| Immature Retic Fraction | 2M-6M | 13.4-23.3 | 13.4-23.3 | % | |||||
| Immature Retic Fraction | 1M-2M | 19.1-28.9 | 19.1-28.9 | % | |||||
| Immature Retic Fraction | 3D-1M | 14.5-24.6 | 14.5-24.6 | % | |||||
| Immature Retic Fraction | 0-3D | 30.5-35.1 | 30.5-35.1 | % |