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HelpTest Code RETIC Reticulocyte Count, Blood
Additional Codes
| Epic Order Code: | LAB296 |
| Sunquest Order Code: | RETIC |
Specimen Required
| Container Type: |
Lavender top (EDTA) |
| Optimal Collection Volume: |
3-4 mL whole blood |
| Collection Instructions: |
1. Gently invert 5 to 10 times to mix blood. 2. Do not centrifuge. |
Useful For
Assessing erythropoietic bone marrow activity in anemia and other hematologic conditions
Profile Information
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| ARETI | Absolute Reticulocyte | No | Yes |
| RETPCT | Relative Reticulocyte Percent | No |
Yes |
| RETHE | Reticulocyte Hemoglobin | No | Yes |
| IRF | Immature Reticulocyte Fraction | No | Yes |
Flow Cytometry
Flow Cytometry performed on the Sysmex XN Analyzer
Includes absolute count and reticulocytes expressed as a percentage of total RBCs, reticulocyte hemoglobin equivalent (RetHe), and immature reticulocyte fraction (IRF).
Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| EDTA whole blood | Refrigerated | 72 hours |
| EDTA whole blood | Ambient | 8 hours |
Rejection Due To
| Hemolysis | Mild OK; Moderate OK; Gross Reject |
| Lipemia | Mild OK; Moderate OK; Gross OK |
| Icterus | Mild OK; Moderate OK; Gross OK |
| Other | Clotted |
Specimen Minimum Volume
Collecting minimum volumes can result in a need for sample recollection, and/or a delay in results. Minimum volumes are subjective and cannot account for all aspects of specimen and testing needs. Refer to the Specimen Required section for optimal volumes for laboratory specimens. Contact the Bronson Laboratory if complex collection exceptions occur that require more information.
| Minimum Volume: | 1 mL in a 4.0 mL EDTA tube |
| Neonate Volume: | 0.25 mL in a MAP EDTA tube |
Performing Laboratory
Bronson Laboratory, Hematology-Kalamazoo, Battle Creek, South Haven, Lakeview
Day(s) Performed
Monday through Sunday 24/7
Reference Values
| Test ID | Reference Range | Units | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| ARETI |
|
10^9/L | |||||||||
| RETPCT |
|
% | |||||||||
| RETHE | 28.6-36.3 | pg | |||||||||
| IRF | 2.3-15.9 | % |
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| RETIC | Reticulocytes | 60474-4 |
CPT Code Information
85046
Sample Retention Time
7 days