| | Conditions Treatments | High Blood Pressure Is 142 a safe sodium blood level? 142 mmol/L is a normal sodium blood level. The normal range for serum sodium is between 136-145 mmol/L. High Blood Pressure - Related Articles The Uses of the Mullein Leaf What is the meaning of expression needles and pins? Does a benign brain tumor cause damage? How to Pick a Plastic Surgeon Diet and Exercise for Women With PCOS How to Care for the Drain Pan on a Liquid Oxygen Tank What Are the Treatments for Cirrhosis of the Liver?