CD4-CD8 Ratio

**Definition:** Ratio of T-LYMPHOCYTES that express the CD4 ANTIGEN to those that express the CD8 ANTIGEN. This value is commonly assessed in the diagnosis and staging of diseases affecting the IMMUNE SYSTEM including HIV INFECTIONS.

**Tree numbers:** - E01.370.225.500.195.107.595.500.150.160 - E01.370.225.625.107.595.500.150.160 - E05.200.500.195.107.595.500.150.160 - E05.200.625.107.595.500.150.160 - E05.242.195.107.595.500.150.160 - G04.140.107.595.500.150.160 - G09.188.105.595.500.150.160 - G12.248

**Synonyms:** - T4-T8 Ratio