Reticulocytes, Percent & Number
0040022
 
Ordering Recommendation
Mnemonic
RETICULOCY
Methodology
Flow Cytometry
Performed
Sun-Sat
Reported
Within 24 hours
New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
 
Collect
Lavender (EDTA) or pink (K2EDTA).  
Specimen Preparation
Do not freeze. Transport 3 mL whole blood . (Min: 0.5 mL)  
Storage/Transport Temperature
Refrigerated.  
Unacceptable Conditions
Frozen specimens. Clotted or hemolyzed specimens.  
Remarks
 
Stability
Ambient: 24 hours; Refrigerated: 72 hours; Frozen: Unacceptable  
Reference Interval
Test Number Components Reference Interval
0040280Reticulocytes
Age Male Female
1-​3 days 2.2-​4.8% 2.1-​3.7%
4-​30 days 0.4-​2.7% 0.4-​2.0%
31-​60 days 0.9-​3.8% 1.1-​2.9%
61-​180 days 0.8-​2.0% 0.9-​2.0%
0.5 -​2 years 0.8-​2.0% 0.8-​2.1%
3-​6 years 0.8-​2.0% 0.8-​2.1%
7-​12 years 0.7-​2.2% 0.8-​2.8%
13 years and older 0.8-​2.7% 0.8-​2.7%
Reticulocyte Number 13 years and older Male: 45-​133 K/µL
13 years and older Female: 36-​107 K/µL
Interpretive Data
Note
CPT Code(s)
85045
Components
Component Test Code*Component Chart Name
0040023Reticulocyte Number
0040280Reticulocytes Percent
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, contact interface support at interface.support@aruplab.com.
Cross References
  • Reticulocyte index