High numbers of RBCs may indicate:
Low numbers of RBCs may indicate:
Low numbers of WBCs (leukopenia) may indicate:
- Bone marrow failure (for example, due to infection, tumor or fibrosis)
- Presence of cytotoxic substance
- Autoimmune/collagen-vascular diseases (such as lupus erythematosus)
- Disease of the liver or spleen
- Radiation exposure
High numbers of WBCs (leukocytosis) may indicate:
Low hematocrit may indicate:
- Anemia (various types)
- Blood loss (hemorrhage)
- Bone marrow failure (for example, due to radiation, toxin, fibrosis, tumor)
- Hemolysis (RBC destruction) related to transfusion reaction
- Leukemia
- Malnutrition or specific nutritional deficiency
- Multiple myeloma
- Rheumatoid arthritis
High hematocrit may indicate:
- Dehydration
- Polycythemia vera
- Low oxygen tension (smoking, congenital heart disease, living at high altitudes)
Low hemoglobin values may indicate:
- Anemia (various types)
- Blood loss
The test may be performed under many different conditions and in the assessment of many different diseases.
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