ARUP's Laboratory Test Directory

Reticulocytes, Percent & Number : 0040022

Mnemonic: RETICULOCY

Methodology: Flow Cytometry
Performed: Sun-Sat
Reported: Within 24 hours
Specimen Required: 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.

Stability (collection to initiation of testing): 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

CPT Code(s): 85045