B2 microglobulin should be β2 microglobulin. If the β2 microglobulin in blood is more than 8mg/L, further examination is needed to confirm whether the patient is suffering from hypertensive nephropathy, and follow the doctor’s instruction for standardized treatment after clear diagnosis. The normal concentration of β2-microglobulin in blood is 0~8mg/L, and the normal range of β2-microglobulin in urine is 0~0.2mg/L. If the patient’s test result is higher than the normal range, then further examination is needed to confirm whether the patient is suffering from hypertensive nephropathy. There are different errors in the test results each time. If the test results are within the normal range, there is no need to worry too much and the patient can continue to be observed. If the patient’s β2-microglobulin is still significantly high after re-checking, he/she needs to consult a doctor for a clear diagnosis; if the concentration of β2-microglobulin in the blood is normal but the concentration in the urine is too high, then it is considered that it may be related to hypertensive nephropathy. The value of β2-microglobulin and treatment are not directly related. In case of problems related to high β2-microglobulin concentration, you should consult a doctor in time, make a clear diagnosis and follow the doctor’s instructions to standardize the treatment.