Kidney Function Test (KFT)
A kidney function test (KFT) measures creatinine and related markers to check how well the kidneys are filtering waste.
What it measures
KFTs measure creatinine, blood urea nitrogen (BUN) and electrolytes. These are used to estimate the glomerular filtration rate (eGFR), which shows how well the kidneys are working.
Why it's ordered
KFTs are ordered for people with diabetes, high blood pressure or a family history of kidney disease, and when there are symptoms such as swelling or reduced urine output.
What to expect
A small blood sample is taken. Fasting is not usually required. Results are reviewed alongside blood pressure and sugar control.
Related conditions
Frequently asked questions
What is creatinine?
Creatinine is a waste product from muscles that the kidneys filter out. Higher levels in the blood can mean reduced kidney function.
Who should get a kidney function test?
People with diabetes, high blood pressure, a family history of kidney disease, or symptoms such as swelling or reduced urine output should be screened.
Can dehydration affect kidney function test results?
Yes, severe dehydration can temporarily raise creatinine levels. Your doctor will consider this when interpreting results.
Ask about this test
Contact the clinic to find out whether this test is appropriate for your symptoms or routine check-up.
The information on this page is for general health awareness and does not replace an in-person medical consultation, diagnosis, or treatment plan. If you're experiencing symptoms, please contact Aram Clinic or another qualified healthcare provider. In a medical emergency, go to the nearest emergency department immediately.