The amount of creatinine should not be used to determine the presence of nephritis. The creatinine of patients with early nephritis may be normal, that is, the ability of the kidneys to excrete metabolic wastes is normal, but at this time, patients often already have urinary protein and urinary occult blood.
Creatinine is a metabolic waste normally excreted by the kidneys. Nephritis refers to inflammation of the kidneys caused by various reasons, which damages the glomerular filtration barrier, resulting in the glomeruli not being able to block the proteins and red blood cells in the bloodstream, thus causing symptoms such as urinary protein and urinary occult blood.
The diagnosis of nephritis is made by clinical symptoms, such as the presence of hematuria, elevated blood pressure, and foamy urine; laboratory tests, including the presence of erythrocytosis and positive urinary proteins; and imaging tests, such as the presence of cortical enhancement in both kidneys. Final diagnosis requires renal tissue aspiration biopsy.
It is recommended that patients with nephritis should consult the doctor in time and follow the doctor’s instructions.