Is high epithelial cells a sign of nephritis?

Sometimes, when people undergo routine urinalysis, they may find elevated levels of epithelial cells and suspect they have nephritis. But does a high level of epithelial cells mean nephritis?

Does a high level of epithelial cells indicate nephritis?

The presence of epithelial cells in a routine urinalysis has no specific clinical significance. Epithelial cells refer to the cells on the surface layers of the skin and airways. The detection of epithelial cells in urine indicates those that have naturally sloughed off and died from the urinary tract lining, which is not specifically indicative of any particular condition. Elevated epithelial cells, especially when accompanied by high bacterial counts and increased white blood cells, may suggest a urinary tract infection. However, the cause of isolated elevated epithelial cells remains unclear. Even in healthy individuals without disease, epithelial cell levels can sometimes be elevated.

Nephritis is typically associated with hematuria (blood in urine), proteinuria (protein in urine), hypertension, and edema. The diagnosis primarily relies on findings of hematuria and proteinuria rather than elevated epithelial cells alone. Moreover, if proteinuria is present, it's important to determine whether it's acute or chronic nephritis, which requires additional tests for clarification. In cases of suspected chronic nephritis, a kidney biopsy may be necessary to identify the pathological type and assess prognosis. Isolated elevation of epithelial cells generally has little diagnostic value and cannot indicate nephritis; further evaluation alongside other test results is needed to determine the underlying cause.

It is recommended that individuals seek timely medical evaluation at a hospital if they experience any physical discomfort, so the cause can be properly identified and appropriate management initiated. We hope this answer has been helpful to you. Wishing you good health and happiness.