24-h exchangeable sodium in genetically hypertensive and normotensive rats

Total exchangeable sodium (Nae) was measured in NZ genetically hypertensive (GH) rats, random bred normotensives (N), Japanese spontaneously hypertensive rats (SHR) and normotensive Wistar-Kyoto rats WKY. SHR rats were found to have significantly higher Nae than any of the other 3 strains. This confirms results previously obtained using a different method for Nae measurements.