The electrolytes are measure by doctors with blood testing include sodium, potassium, chloride, and bicarbonate.
1. Sodium(Na)
Function of Sodium: (1)The water regulation in the body, since the water goes where, it is excreted by the kidney, and water follows. (2)It help the electrical in the body, allowing muscles to fire and the brain to work.
Hypernatremia, if there is to much sodium in your body, then you will dehydration, that is cause by illnesses with vomiting or diarrhea, excessive sweeting from exercise or fever, or from drinking somethings that has too high concentration of salt.
Hyponatremia, if there is too little sodium in your body, that might be cause by water intoxication, that you drink too much water, then it dilutes the sodium in the blood and overwhelms the kidney's compensation mechanism, or by a syndrome of inappropriate anti-diuretic hormone secretion(SIADH).
2. Potassium
Potassium is the most concentrated inside the cells of the body. It allows muscles and the brain to function.
Hyperkalemia, if there is too much potassium in your body, you will have heart rhythm problem.
Hypokalemia, if there is too little potassium in your body, that is because the body loses too much potassium from vomiting, diarrhea, sweating, and medications such as diuretics or laxative. It often seen in diabetic ketoacidosis, where potassium is excessively lost in the urine.