[Determination of sodium, potassium and chlorine].
D000328:Adult; D002648:Child; D002713:Chlorine / Q000097:blood*; D006801:Humans; D007223:Infant; D011188:Potassium / Q000097:blood*; D012964:Sodium / Q000097:blood*
D002713:Chlorine; D012964:Sodium; D011188:Potassium