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.
Submit With Order
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 NameLOINC
0040023Reticulocyte Number 
0040280Reticulocytes Percent17849-1
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • Reticulocyte index