Reticulocyte Count

Sunquest Code:RET  
Epic Code:LAB296Epic Name:Reticulocyte Count
Turnaround Time:Performed 24 hours/day; results are reported the same day.

Collection Instructions

Optimal Volume:2-3 mL EDTA tube or 0.5 mL in an EDTA microtainer (do not fill more than 0.5 mL)
Minimum\Peds Volume:1 mL EDTA tube or 0.3 mL in an EDTA microtainer
Container:Purple (EDTA)
Collection Instructions:Immediately mix specimen 10 times by gentle inversion.
Causes for Rejection:Clotted specimen, specimens greater than 72 hours old.

Processing and Shipping

Specimen Processing:Store in refrigerator.
Shipping Instructions:Ship at refrigerated temperature.
Stability:72 hours refrigerated.
Test Performed at or Referral Lab Hematology  (University of Minnesota Health Maple Grove Clinics, Range, UMMC-East Bank, Lakes, Ridges, Northland, Southdale, UMMC/UMMCH-West Bank, M Health Clinic and Surgery Center, Grand Itasca, St. Joseph's, St. John's, Woodwinds)


Reference Range:


Retic (%)

0-6 d


7 d and older



Absolute Count:

  1 y and older:    25-95 x 109/L


Use:Evaluation of erythrocyte production. Increased in acute and chronic hemorrhage, hemolytic anemias. Evaluating erythropoietic response to antianemic therapy.

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