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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
ARUP Consult®
Disease Topics
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 days2.2-4.8%2.1-3.7%
4-30 days0.4-2.7%0.4-2.0%
31-60 days0.9-3.8%1.1-2.9%
61-180 days0.8-2.0%0.9-2.0%
0.5 -2 years0.8-2.0%0.8-2.1%
3-6 years0.8-2.0%0.8-2.1%
7-12 years0.7-2.2%0.8-2.8%
13 years and older0.8-2.7%0.8-2.7%

 Reticulocyte Number13 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