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Test Code RETIC RETICULOCYTE COUNT

Important Note

Specimen must arrive within 8 hours of draw.

Methodology

Sysmex® XN Methodologies

The enumeration of immature RBCs (reticulocytes) is a simple and direct way in which to assess the bone marrow’s response to anemia.

Specimen Requirements

Specimen must arrive within 8 hours of draw.

 

Container/Tube: Lavender-top (EDTA) tube(s) with HemogardTM lid or lavender MICROTAINER®

 

NOTE: 6 & 7 mL (EDTA) tubes are not compatible with our automated Hematology system.

 

Specimen Volume: 3 mL (minimum volume: 1 mL/pediatric: 0.5 mL) of whole blood

Collection Instructions:

Invert tube(s) several times to mix blood. Do not centrifuge. Forward promptly in original tube(s).

Specimen Rejection

  1. Do Not Centrifuge
  2. Clotted or Hemolyzed
  3. Frozen Samples

Specimen Retention Time

48 hours

Day(s) Test Set Up

Monday through Sunday

Maximum Laboratory Time

24 hours

Specimen Stability

 

Specimen Type Temperature Time
Blood Ambient < 24 hours
  Refrigerate < 48 hours
     

Reference Values

 

Absolute Count  
     
Males    
  M/mm3  
0-2D 0.10 - 0.46   
3-6D 0.04 - 0.20   
7d-1M 0.00 - 0.06   
>1M 0.01 - 0.18   
     
Females    
  M/mm3  
0-2D 0.10 - 0.46  
3-6D 0.04 - 0.20   
7d-1M 0.00 - 0.06   
>1M 0.01 - 0.16   
     
Percent    
  %  
0-2D 2.50 - 7.00  
3-6D 1.00 - 3.00  
7d-1M 0.00 - 1.00  
>1M 0.31 - 2.89   
     
Immature Reticulocyte   
Fraction (IRF) % %
0D -Adult Female 3.9 - 15.9
Male 2.3 - 13.4
     
Reticulocyte Hemoglobin   
Equivalent    
  pg  
0D-Adult 29.9 - 38.7  

Performing Laboratory

Logan Health Medical Center Laboratory

Test Classification and CPT Coding

85046