The normal range for a CD4 count is typically from 500 to 1,400 cells per cubic millimeter of blood.
Understanding CD4 Counts
CD4 cells, also known as T cells or T-helper cells, are vital white blood cells in your immune system. They play a critical role in fighting off infections. Measuring the number of these cells in your blood is known as a CD4 count. This measurement helps assess the strength of your immune system.
What the Numbers Mean
According to information from a reference dated 10-Oct-2024, a normal CD4 count is within a specific range:
- A normal CD4 count is from 500 to 1,400 cells per cubic millimeter of blood.
It is important to understand that CD4 counts can change over time. As the reference indicates, CD4 counts may decrease over time if certain medical treatments, such as taking ART (Antiretroviral Therapy), are not followed.
Significance of Low CD4 Counts
When CD4 counts fall below the normal range, it signals a weakening of the immune system, making an individual more susceptible to illnesses. The provided reference highlights a particularly critical threshold:
- At levels below 200 cells per cubic millimeter, there is a significantly increased likelihood of developing a wide variety of opportunistic infections (OIs). Many of these OIs can be severe or even deadly.
Monitoring CD4 levels helps healthcare professionals evaluate immune function and guide appropriate medical care to protect against infections.
CD4 Count Ranges Summary
Here's a simple breakdown of the typical ranges:
| Range (cells/mm³) | Interpretation | Clinical Significance |
|---|---|---|
| 500 - 1,400 | Normal Range | Healthy immune system |
| Below 200 | Severely Low (Immunocompromised) | High risk of serious Opportunistic Infections |
Maintaining a CD4 count within the normal range is a key indicator of a healthy and effective immune system.
