Blood α1-microglobulin 31mg/L, generally need to be combined with other symptoms and examination, to clarify the cause of the disease for treatment, the index is simply elevated, need to continue to review. 1. High blood α1-microglobulin indicates that glomerular filtration function is impaired, which has some significance in the diagnosis of early kidney injury, such as diabetic nephropathy, hypertensive nephropathy, etc., and needs to be treated for the primary disease, such as diabetic nephropathy to be insulin to control the blood glucose level. 2. If the blood α1-microglobulin is high without other manifestations, we can continue to observe and review regularly. α1-microglobulin is mainly synthesized by liver and lymphocytes. α1-microglobulin present in the blood is almost completely reabsorbed back into the blood by the glomeruli after glomerular filtration. The normal reference value for serum α1-microglobulin is 10-30 mg/L (0.01-0.03 g/L). When the blood α1-microglobulin is high, it is recommended to have further examination under the guidance of a doctor to clarify the cause of the disease and carry out standardized treatment, so as to avoid delaying the condition.