Check the blood electrolyte level. Ion binding 2 detection is an auxiliary examination, which generally refers to the examination of blood electrolyte level, that is, the contents of potassium ion, sodium ion and calcium ion in serum. Because the concentration of various electrolytes in blood is kept in a certain range, it plays an important physiological role in maintaining the balance of liquid inside and outside cells and the excitability of neuromuscular cells. Every index in the electrolyte will change, and different changes will lead to different diseases, acid-base imbalance of patients, and even life-threatening. For example, too low potassium ion concentration will lead to hypokalemia, muscle weakness and muscle paralysis, while too high potassium ion concentration will lead to impaired heart function. Too low calcium ion concentration may lead to convulsion, and too high calcium ion concentration may lead to hyperthyroidism, which has an important impact on the normal life and health of patients. Therefore, ion detection is necessary, which can detect many diseases, and the specific symptoms should be analyzed according to the inspection indicators of electrolytes.