This test is used to evaluate the level of sodium in the blood. It is used for determining hypo and hypernatremia (low and high sodium) and is used as part of metabolic or electrolyte panel for routine checkups. The normal level of sodium in the body is vital for the proper functioning of muscle and nerve cells and also maintains the body fluids. Any fluctuations in the level of sodium can lead to dehydration or edema in the body. Other symptoms that lead to the recommendation of this test include fatigue,
LabEspy recommends Lab Testing API, Ulta Lab Tests, Save On Labs for this test.