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Test Code RETIC Reticulocyte Count, Blood

Performing Laboratory

MaineGeneral Medical Center

Specimen Requirements

Specimen must arrive within 8 hours of draw if ambient, within 72 hours if refrigerated.

 

Draw blood in a lavender-top (EDTA) tube(s), and send 0.5 mL of EDTA whole blood. For pediatric specimen, draw a lavender-top (EDTA) MICROTAINER(S)®. (Clotted specimen is not acceptable.)

Note:  Label specimen with patient’s name (first and last), date of birth, date and time of draw, and phlebotomist’s initials.

Reference Values

RETICULOCYTE COUNT
Newborn:  ≤5% (expressed as a percentage of 1,000 RBCs)

Normal values at birth:  2-5%, falling to normal adult level by end of the second week.

Adult:  0.5-1.5%

IRF

0.2-0.4

Methodology

Includes immature reticulocyte fraction (IRF).

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding

85045