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Diagnostic Test – CD4 (T-Cell) Counts
1. What is this?
The CD4 (T-cell) count is a laboratory test used to monitor patients with HIV infection.
It measures the number of CD4⁺ helper T lymphocytes in the blood, which reflects the degree of immune function.
Clinical roles of the CD4 count:
Treatment threshold (classic exam standard):
1. What is this?
The CD4 (T-cell) count is a laboratory test used to monitor patients with HIV infection.
It measures the number of CD4⁺ helper T lymphocytes in the blood, which reflects the degree of immune function.
Clinical roles of the CD4 count:
- Assess severity of immunosuppression
- Determine the need for opportunistic infection prophylaxis
- Monitor response to antiretroviral therapy (ART)
Treatment threshold (classic exam standard):
- Initiate antiretroviral therapy when:
- CD4
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