Preferred Specimen(s) Whole blood full EDTA (lavender-top) tube – mix well by gentle inversion
Instructions Maintain specimen at room temperature. If multiple draw, collect (lavender-top) tube last.
Transport Container EDTA (lavender-top) tube
Transport Temperature Room temperature
Reject Criteria Clotted
Methodology Electronic Cell Sizing and Counting/Cytometry/Microscopy
Clinical Significance Use in evaluating erythropoietic activity