bɪkˈʌz ʌv ðˈɪs, ɪt kæn biː jˈuːsfəl ɪn fˌɪzɪˈɑːlədʒi ɪn ˈɛstᵻmˌeɪɾɪŋ ðə pɹəpˈoːɹʃən ʌv bˈɑːdi wˈɔːɾɚ kəntˈeɪnd ɪn blˈʌd plˈæzmə.
Because of this, it can be useful in physiology in estimating the proportion of body water contained in blood plasma.