Reticulocyte Count
Code:
RETICS
Sample Type:
Purple top tube
Ref Ranges/Units:
Age related normal range:
Newborn (0 days): 2.0 – 5.0 %
3 days: 1.0 - 4.5 %
7 days: 0.5 – 2.5 %
1 month: 0.3 – 1.0%
2 months 0.4 – 1.0%
3 months 0.2 – 2.0%
6 months – Adult: 0.5 – 2.5%
Age related normal range:
Newborn (0 days): 2.0 – 5.0 %
3 days: 1.0 - 4.5 %
7 days: 0.5 – 2.5 %
1 month: 0.3 – 1.0%
2 months 0.4 – 1.0%
3 months 0.2 – 2.0%
6 months – Adult: 0.5 – 2.5%
Age related normal range:
Newborn (0 days): 2.0 – 5.0 %
3 days: 1.0 - 4.5 %
7 days: 0.5 – 2.5 %
1 month: 0.3 – 1.0%
2 months 0.4 – 1.0%
3 months 0.2 – 2.0%
6 months – Adult: 0.5 – 2.5%
Age related normal range:
Newborn (0 days): 2.0 – 5.0 %
3 days: 1.0 - 4.5 %
7 days: 0.5 – 2.5 %
1 month: 0.3 – 1.0%
2 months 0.4 – 1.0%
3 months 0.2 – 2.0%
6 months – Adult: 0.5 – 2.5%
Turnaround:
Urgent requests < 90 mins Routine requests < 4hours
Special Precautions/Comments:
Additional Information:
Reticulocytes are immature ted blood cells which still have some remnant genetic material (RNA). As they mature they lose the last residual RNA and most are fully developed within one day of being released from the bone marrow. Reticulocyte counts provide an indication bone marow activity. Increased counts are often seen in acute or chronic bleeding that leads to anaemia. Reduced counts can be seen in some deficiency states (iron, B12 or Folate deficiency, bone marrow failure or low levels of erythropoietin).
South of Tyne & Wear Pathology Centre
