Kidney Function Test Fasting. Thus some labs may not insist for fasting during kidney function test. A 57 year old female asked.
Do i need to fast for a kidney function blood test. Creatinine and bun will change very little if you are non fasting. However fasting can irritate damaged kidneys due to the amount of toxins they filter.
The fasting requirement is dependent on components being included in the test.
However fasting can irritate damaged kidneys due to the amount of toxins they filter. The tests check your blood sugar electrolyte and fluid balance and kidney function. Kidney function blood test fasting. 43 years experience pathology.