Aim We hypothesized that in normal rats in metabolic steady state, (i) the plasma renin concentration (PRC) is log‐linearly related to Na+ intake (NaI), (ii) the concurrent changes in mean arterial pressure (MABP) and glomerular filtration rate (GFR) are negligible, and (iii) the function PRC = f(NaI) is altered by β1–adrenoceptor blockade (metoprolol) and surgical renal denervation (DNX). Methods In catheterized, conscious rats on low‐Na+ diet (0.004 % Na+), NaI was increased by up to 120‐fold, in four 3‐day steps, by intravenous saline infusion. MABP was recorded continuously, PRC measured in arterial blood, and GFR estimated by inulin clearance. Results Steady states were achieved within 3 days. PRC [mIU/l] was log‐linearly related to NaI [mmol/kg/d]: PRC = −9.9·log (NaI) + 22. Set point (22 mIU/l at NaI = 1) and slope (9.9 mIU per decade NaI) were independent of metoprolol administration and DNX. MABP and GFR were markedly salt sensitive: MABP [mmHg] = 4.9·log (NaI) + 99 (p<0.01), and GFR [ml/min] = 1.4·log (NaI) + 8.3 (p<0.01). MABP increased similarly (~10%, p<0.001) irrespective of pretreatment. Metoprolol, but not DNX, reduced MABP, HR, and GFR (all p<0.01). Salt‐sensitivity of GFR was not observed in DNX rats. Conclusion Log‐linear relations to sodium intake exist not only for PRC, but also for MABP and GFR, which per 10‐fold increase in sodium intake rose by 5 mmHg and 1.4 ml/min, respectively. Steady state levels of PRC appear independent of renal nerves. MABP and GFR seem markedly salt sensitive in normal rats. This article is protected by copyright. All rights reserved.