Helper T Lymphocyte to Total Blood Cell Percent Measurement

**Semantic type:** Laboratory Procedure

**Definition:** The measurement of the ratio of helper T lymphocytes, which are T lymphocytes that express CD4, to the total number of blood cells in a sample expressed as a percent value.

**Synonyms:** - % CD4+ T Cells - CD4 Expressing T Cell to Total Blood Cell Percent Measurement - CD4 Expressing T Lymphocyte to Total Blood Cell Percent Measurement - CD4 Positive T Cell to Total Blood Cell Percent Measurement - Helper T Cell to Total Blood Cell Percent Measurement - Percent CD4+ T Cells