Nucleated Red Blood Cells
Nucleated red blood cells are immature red blood cells not normally found in adult blood. Their presence suggests the bone marrow is under stress.
Category: Complete Blood Count
Also known as: nrbc, nucleated rbc, nucleated red blood cells, nrbc %, nucleated red cells, erythroblasts, jedarna crvena krvna zrnca
Reference range: 0–0 % (Source: ABIM)
Standard unit: %
High values may indicate
Presence of NRBCs may indicate severe anemia, bone marrow disorders, leukemia, sepsis, or severe hypoxia.
Low values may indicate
NRBCs are normally absent from adult blood, so a count of zero is expected and healthy.
Frequently asked questions
- What is a normal Nucleated Red Blood Cells level?
- A typical reference range for Nucleated Red Blood Cells is 0–0 % (source: ABIM). Reference ranges vary by laboratory, age, and sex, so always compare against the range on your own lab report.
- What units is Nucleated Red Blood Cells measured in?
- Nucleated Red Blood Cells is most commonly reported in %. Labs in different countries may use other units — you can convert between them with BloodId's blood test unit converter.
- Where do Nucleated Red Blood Cells reference ranges come from?
- BloodId uses ABIM standard reference ranges and educational information from MedlinePlus (see our methodology). Reference ranges still vary by lab, age, and sex, so always compare against your own report.
- Can I track Nucleated Red Blood Cells over time?
- Yes. Upload results from any lab and BloodId charts your Nucleated Red Blood Cells over time against its reference range, so you can see whether the trend is rising, falling, or stable.
Related biomarkers
Source: MedlinePlus, U.S. National Library of Medicine
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