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Test Code LAB296 Reticulocyte Count, Blood

Additional Codes

OBL MLAB 46452

Reporting Title

Reticulocyte

Methodology

Automated Multiparameter Hematology Analyzer

Used to evaluate erythropoietic activity.

Performing Laboratory

OhioHealth Laboratory Services-RMH, GMC, DH, DMH, MGH, GMH, HMH, DHC, WECC, PMC, GCMH and OBL Core Laboratories

Specimen Requirements

Specimen must arrive within 48 hours of draw.

 

Draw blood in a lavender-top (EDTA) tube(s), and send EDTA whole blood. Mix gently by inverting 8 times. Do not centrifuge. Forward unprocessed whole blood promptly at ambient temperature. If there is a delay in transport, send specimen refrigerated.

Note:  Specimen may be refrigerated for up to 48 hours if unable to process immediately.

Specimen Transport Temperature

Ambient/Refrigerate ≤48 hours OK/Frozen NO

Reference Values

RETICULOCYTES

0.5-2.5%

ABSOLUTE RETICULOCYTES

Males  0.040-0.090 M/mcL

Newborn-3 months:  0.02-0.10 M/mcL

≥4 months:  0.025 0.09 M/mcL

Females 0.025-0.070 M/mcL

Newborn-3 months:  0.02-0.10 M/mcL

≥4 months:  0.025-0.07 M/mcL

IMMATURE RETICULOCYTE FRACTION 
≥3 months: 10-40%

RETICULOCYTE HEMOGLOBIN (Ret-He)

Adults 27.7-38.2 pg/RBC

Day(s) Test Set Up

Monday through Sunday; Continuously

Test Classification and CPT Coding

85045