It’s after dark, a warm and humid evening, and I’m walking to the shops near my apartment.

What is Sodium (Na+)?

A sodium test checks how much sodium (an electrolyte and a mineral) is in the blood. Sodium is both an electrolyte and mineral. It helps keep the water (the amount of fluid inside and outside the body's cells) and electrolyte balance of the body. Sodium is also important in how nerves and muscles work.

Other Name

Na + / sod.