Urine N-Acetyl-β-D-Glucosaminidase Test
Health Checkups
≈ ¥20-50
(≈ $3-7)
15 min
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Description
Estimated cost for Urine N-Acetyl-β-D-Glucosaminidase Test at general public hospitals in China is about ¥15-40, and at Grade 3A hospitals about ¥20-50, varying by hospital tier and region.
Main Uses
The primary purpose of the N-Acetyl-β-D-Glucosaminidase (NAG) test in urine is to assess kidney function, particularly the health of the renal tubules. It is used to detect early signs of kidney damage, monitor the progression of kidney diseases, and evaluate the effectiveness of treatments. This test is especially useful in diagnosing and monitoring conditions like diabetic nephropathy, acute and chronic kidney injuries, and drug-induced nephrotoxicity.
Normal Range
The normal range for N-Acetyl-β-D-Glucosaminidase (NAG) in urine is typically between 0.3 to 2.5 U/L, though this can vary slightly depending on the laboratory and the specific method used for measurement.
Low Values - Possible Causes
Low values of NAG in urine are less commonly a concern but may be associated with: 1. Overhydration, 2. Certain medications that reduce enzyme activity, 3. Rare genetic conditions affecting enzyme production, 4. Very low protein intake, 5. Lack of renal tubular damage or stress.
High Values - Possible Causes
High values of NAG in urine can indicate: 1. Acute kidney injury, 2. Chronic kidney disease, 3. Diabetic nephropathy, 4. Renal tubular disorders, 5. Exposure to nephrotoxic substances such as heavy metals or certain drugs.