Is a kidney function test done by drawing blood?
Disease description:
Recently, many purple spots have appeared on my thighs. Later, the doctor diagnosed it as purpura and recommended that I undergo a kidney function test. May I ask, is a kidney function test performed by drawing blood?
Doctor's answer (1)
Dr. Yang Ziqi
Kidney function tests primarily involve blood draws, combined with other auxiliary examinations, to comprehensively and accurately assess kidney function.
1. Main tests: Blood is drawn intravenously to check levels of creatinine, blood urea nitrogen (BUN), uric acid, and other indicators, which reflect the kidney's filtration function and ability to excrete metabolic waste.
2. Auxiliary tests: In addition to blood tests, kidney function evaluation may also include urinalysis, electrolyte measurements, and color Doppler ultrasound of the urinary system to provide a comprehensive assessment of kidney function.
3. Importance: Blood testing is an essential method for evaluating kidney function, enabling timely detection of abnormalities and providing evidence for clinical diagnosis and treatment.
