Reticulocyte count - blood
Last updated: Saturday, 01, May, 2004
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5 mL blood in EDTA tube.
Fresh blood incubated with:
Some blood counters have reticulocyte modules to perform semi-automated or automated reticulocyte counts. Principle of test depends on the specific instrument.
The absolute reticulocyte count is calculated from the reticulocyte percentage and the red cell count.
| Reference Interval|
Term infant, cord blood: 2-6% (microscopy)
Indicated in the assessment of anaemia when bone marrow failure suspected;
Reticulocyte count reflects marrow erythropoietic activity and corresponds to the finding of polychromasia on a blood film.
A low reticulocyte count in the presence of anaemia indicates bone marrow failure or haematinic deficiency.
Chin Yee I. Clin Lab Haematol 1991; 13: 177-188.