Extracellular Water to Total Body Water Ratio Measurement

**Semantic type:** Diagnostic Procedure

**Definition:** The determination of the ratio of extracellular water to total body water present in a sample. The measurement may be expressed as a ratio or percentage.

**Synonyms:** - ECW/TBW - ECWTBW - Extracellular Water/Total Body Water - Extracellular Water/Total Body Water