Reticulated Hemoglobin Equivalent

Test Code

RETHE - NOCO

CPT Codes
85046

Preferred Specimen

4.5 mL whole blood from Purple EDTA or Pink K2 EDTA

Minimum Volume

0.5 mL
0.25 mL (Microtainer EDTA)

Specimen Stability

Specimen Type	Temperature	Time
Whole Blood EDTA	Ambient	24 hours
Whole Blood EDTA	Refrigerate	48 hours

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

Gross hemolysis, clotted

Setup Schedule

Monday through Sunday; Continuously

Report Available

Same day

Reference Range

Refer to the Hematology Reference Range document in the Resources section of the facility test directory.

Performing Laboratory
Banner Fort Collins Medical Center Laboratory
North Colorado Medical Center Laboratory
NLMC

Last Updated: August 13, 2026

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.