Reticulocyte Count
Reviewed
A reticulocyte count measures the number of immature red blood cells (reticulocytes) in your blood. It helps check if your bone marrow is making the right amount of red blood cells.
Preparation and collection
You don't need any special preparations for this test.
Understanding this test
Use the reference interval and units printed by the laboratory that performed the test. A result outside that interval is not a diagnosis by itself, and a result inside it does not rule out every condition. Your symptoms, history, medicines, timing, and related tests can change what the result means.
- Results must be interpreted by a healthcare professional in the context of your symptoms, medical history, and other blood tests.
- A reticulocyte count that is not normal does not always mean you have anemia or another health condition.
- Reticulocyte counts may be higher during pregnancy.
- Counts may temporarily increase after moving to a high altitude and return to normal once your body adjusts.
- Some medicines may increase or decrease your reticulocyte count.
What to do next
If you have questions about your results or your child's results, talk to your health care provider. Your provider will explain what your results mean and whether any follow-up is needed.