Reticulocyte Cellular Hemoglobin
Label Mnemonic: RETHE
Epic code: LAB1145
Order form: Laboratory Requisition
Supply order: Supply Order Form
Billing: Billing Policies
CPT code: 85046
Specimen(s):
Whole Blood
Collection Medium:
Lavender top tube 3 mL (EDTA)
Minimum:
Full draw; 3.0 mL lavender top; (or fingerstick-purple top microtainer®)
Testing Schedule:
24 hrs/day, 7 days a week, including holidays.
Turn Around Time:
1 hour (upon receipt in laboratory)
Reference Range:
30-40 pg
Comments:
Refer to BD Microtainer® Tubes product sheet for detailed sample collection instructions.
Test Limitations:
Blood:  <24 hours old if stored at room temperature
        <72 hours old if refrigerated
Methodology:
Reticulocytes are stained with a polymethine dye, oxazine 750 and cells analyzed for cell size and hemoglobin. Light absorption is proportional to the DNA/RNA content.
Sample Processing:
Lavender tube is sent as whole blood, no processing necessary.
Sample Storage:
Refrigerate, 2-8°C.
Transport Instructions:
Place labeled specimen into zip-lock type biohazard bag; seal bag.
Place requisition into outside pocket of bag.
Transport in cooler with refrigerated coolant packs.
CPT Code:
85046
 
See also:
Reticulocyte Count (Automated), Whole Blood