Reticulocyte Count (Automated)
Label Mnemonic: ARET
Epic code: LAB296
Downtime form: A-1a Doctor/Provider Orders - Pathology Core and Specialty Care Nursery
6240 RCP
Whole Blood
Collection Medium:
Lavender top tube 3 mL (EDTA)
Full draw; 3.0 mL lavender top; (or fingerstick-purple top microtainer®)
Testing Schedule:
24 hrs/day, 7 days a week, including holidays.
Turn Around Time:
1 hour (upon receipt in laboratory)
Reference Range:
Age                     Absolute Reticulocyte Range
      1 - 3 Days*            77 - 283 K/mm3
      4 - 30 Days*           14 - 159 K/mm3
     31 - 60 Days*           28 - 201 K/mm3
60 Days - Adult              12 - 130 K/mm3
*Full Term Infant
Refer to BD Microtainer® Tubes product sheet for detailed sample collection instructions.

A reticulocyte count can usually be added to any CBC sample <24 hours old.

This test is also performed in the Iowa River Landing (IRL) clinical laboratory (for specimens drawn at that site).
Flow Cytometry
Reticulocyte counts are performed using flow cytometry method.  The 
RNA/DNA in the Reticulocytes is stained and the stained cells are then 
detected and enumerated on the basis of a two-dimensional distribution 
of the forward scattered light and lateral fluorescent light.
CPT Code: