Normal sodium levels in your blood are between 135 and 145 milliequivalents per liter (mEQ/L) — anything higher or lower may be a cause for concern. Business Insider Subscribe Newsletters ...

A high normal sodium level in midlife may predict future heart failure. Patients should monitor hydration and clinicians should not assume a sodium level of 142 mmol/L is appropriate, researchers say.

Serum and urine sodium concentrations were measured with internal standard flame photometry. Normal values for serum sodium concentrations in this laboratory are 135 to 145 milliequiv. per liter.

Sodium. Normal range: 136-145 mEq/L Increased levels ... (greater than 20-40 mg/dL) may be indicative of altered kidney function. Elevated BUN values may also be seen in a high-protein ...

Higher serum sodium levels, even within the normal range, are linked to increased risk of developing hypertension and heart failure. People with sodium levels of 140 mmol/L or higher had up to a ...

A urine sodium test can be used to determine your kidney function and level of hydration. ... A normal value for the 24-hour test depends on your dietary intake of salt and water.