Helper T-Lymphocyte Subpopulation to T-Lymphocyte Subpopulation Ratio Measurement

**Semantic type:** Laboratory Procedure

**Definition:** The determination of a sub-population of helper T-Lymphocytes to a sub-population of T-lymphocytes present in a sample. The measurement may be expressed as a ratio or percentage.

**Synonyms:** - T-Lymphocytes Helper Sub-Population/T-Lymphocytes Sub-Population - THSTS - TLym Help Sub/TLym Sub - TLym Help Sub/TLym Sub