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Hypertensive nephropathy is a complication of kidney disease and it will cause damage to kidneys due to high blood pressure. The followings are the four tests for hypertensive nephropathy.
1. Microalbumin in urine
Normally, our kidney can protect the albumin from leaking out and it will not present in urine. Because of the high blood pressure to the kidney capillarities, albumin will be filtrated and microalbumin will be detected in urine.
2. Urine NAG
NAG exists in epithelial cells of renal tubular and urinary tract. Patients with high blood pressure that do not accept treatment have increased NAG in urine.
3. β2 Microglobulin in urine
At present, the detection of β2 Microglobulin in urine has been recognized as the sensitive indicator of glomerular filtration rate and the reabsorption ability of renal tubular. There will be increased β2 Microglobulin in urine. With the well control of blood pressure, it will decrease. But when kidney is slight damaged, β2 Microglobulin will be elevated.
4. Red blood cell in urinary sediment
Routine urine test cannot detect microscopic haematuria in urine, but with sediments the doctors will find that the red blood cell are increasing and mainly the abnormal red blood cells.