ARUP's Laboratory Test Directory

0040022: Reticulocytes, Percent & Number

Test Mnemonic: RETICULOCY
Methodology: Flow Cytometry

Performed: Sun-Sat

Reported: Within 24 hours

Specimen Required:  
Collect: One 3 mL lavender (EDTA) or pink (K2EDTA). 

Transport: 3 mL whole blood at 2-8°C.  (Min: 0.5 mL)

Pediatric Collection/Transport: 0.5 mL whole blood at 2-8°C.

Remarks: Do not freeze.

Unacceptable Conditions: Frozen samples, clotted, and hemolyzed samples.

Stability: Ambient: 24 hours; Refrigerated: 3 days; 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

CPT Code(s):
85045

 

 

 
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