Biochemical indicators include several elements, such as liver function test indicators, kidney function test indicators, blood sugar test indicators, cardiac enzyme test indicators, electrolyte test indicators and so on. Each indicator has a different normal range. The normal range of blood sugar, fasting blood sugar 13.9-6.4mmol/L in healthy people, if the fasting blood sugar concentration exceeds 7.0mmol/L is hyperglycemia; if the blood sugar concentration exceeds 9mmol/L, glucose can appear in the urine. Electrolytes in human body include many kinds, including potassium ion, sodium ion, chloride ion, magnesium ion, calcium ion and so on. The normal range of potassium is 3.5-5.5 mmol/L. A blood potassium concentration of more than 5.5 mmol/L is called hyperkalemia; a blood potassium concentration of less than 3.5 mmol/L is called hypokalemia. There are also different indicators of transaminases in liver function, including glutamic aminotransferase and glutamic oxalacetic aminotransferase. There are also different indicators for triglycerides and cholesterol in blood lipids. There are various biochemical indicators, each of which has a different normal range.