A B C D E F G H I J K L M N O P Q R S T U V W X Y Z #

Reticulocyte Count

Test Code
RET


CPT Codes
85045

Preferred Specimen
EDTA (Lavender) Tube


Minimum Volume
1 mL


Transport Temperature
Room temperature


Specimen Stability
Room Temperature: 24 hours
Refrigerated: 48 hours
Frozen: Unacceptable


Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Hemolysis, clotting


Reference Range
Age Range Sex Reference Low [%] Reference High [%]
0 Min 2 Weeks All 1.8 8.0
2 Weeks 1 Month All 0.2 3.0
1 Month 6 Months All 1.0 3.0
6 Months 6 Years All 1.0 3.0
6 Years 12 Years All 1.0 3.0
12 Years 18 Years Male 0.44 2.12
12 Years 18 Years Female 0.44 2.12
18 Years 150 Years Male 0.44 2.12
18 Years 150 Years Female 0.44 2.12


Performing Laboratory
This test is performed at the following locations:
  1. MercyOne Siouxland Medical Laboratory
  2. MercyOne Dakota Dunes Medical Laboratory



Last Updated: May 7, 2025


The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.