A normal complete blood count (CBC) level varies depending on the specific component being measured and the individual's sex and age. There's no single "normal" range, but rather reference ranges for each component. These ranges can also slightly vary between laboratories.
Key Components and Normal Ranges
The CBC measures several key components of your blood:
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White Blood Cells (WBC): 4,500-11,000/mm³ This indicates the number of infection-fighting cells. A higher count might suggest infection, while a lower count may indicate a weakened immune system.
-
Red Blood Cells (RBC):
- Male: 4.3-5.9 million/mm³
- Female: 3.5-5.5 million/mm³ These cells carry oxygen throughout your body. Abnormal levels can indicate anemia or other blood disorders.
-
Hemoglobin (HGB):
- Male: 13.5-17.5 g/dL
- Female: 12.0-16.0 g/dL This protein in red blood cells carries oxygen. Low hemoglobin suggests anemia.
-
Hematocrit (HCT):
- Male: 41%-53%
- Female: 36%-46% This is the percentage of red blood cells in your blood. Similar to hemoglobin, abnormal values point to potential issues like anemia.
Note: These ranges are derived from Table 1, Complete blood count and may vary slightly depending on the laboratory and testing methods. Always refer to the specific reference range provided by your healthcare provider or laboratory.
Interpreting Your CBC Results
Your doctor will interpret your CBC results in the context of your overall health, symptoms, and medical history. A CBC is a valuable tool for detecting a wide range of conditions, including:
- Anemia
- Infections
- Leukemia
- Other blood disorders
It's crucial to discuss any abnormal results with your doctor for proper diagnosis and treatment.
