Nephrin antibodies are disease markers for nephrotic syndrome (INS), minimal nephropathy (MCD), and focal staged glomerulosclerosis (FSGS), and have a high detection rate in patients in the active phase. The Nephrin antibody content in serum is less than 0.00015%, which is susceptible to interference from high-abundance proteins (such as heterophilic antibodies, etc.). The repeatability of operations by different personnel and at different times is poor. AlloDx SuperNAT second-generation highly sensitive Nephrin antibody detection can capture trace amounts of Nephrin antibody molecules as low as 3U/mL.