Test library
Kidney Disease Screening Tests
Kidney Health Tests are blood and urine tests that measure how well the kidneys filter waste and balance fluids. They are used to screen for kidney disease, monitor known kidney conditions, and follow the effects of medications.
Order Kidney Health Tests
Order online and visit a local collection site, or choose an at-home kit where available. No referral and no insurance required.
Order Kidney Health Tests- Typical turnaround
- 1-3 business days
- Starting price
- From $59
- Results
- Confidential, online
Quick answer
Kidney Health Tests are laboratory tests that check how well the kidneys are filtering blood and whether they are leaking protein. The kidneys remove waste, balance fluids and electrolytes, and help control blood pressure. Because early kidney disease often causes no symptoms, these tests are commonly used for screening in people with diabetes, high blood pressure, or a family history, and for monitoring a known kidney condition.
What this test measures
The kidneys filter waste products from the blood and regulate water, salts, and acid balance. They also produce hormones involved in blood pressure and red blood cell production. Damage can develop slowly, so laboratory tests help detect changes before symptoms appear.
Common blood markers include creatinine, which is used to calculate the estimated glomerular filtration rate, or eGFR, and cystatin C in some panels. Urine testing checks for albumin, a protein that can leak through damaged filters. A urine albumin-to-creatinine ratio and a urinalysis may be included.
Kidney health tests may be ordered for routine screening in adults with diabetes, high blood pressure, or heart disease, and for anyone with swelling, changes in urination, or a family history of kidney problems. Results are compared over time, because trends can be more informative than a single value. A qualified healthcare provider should interpret the findings.
- Serum creatinine
- Estimated glomerular filtration rate (eGFR)
- Blood urea nitrogen (BUN)
- Urine albumin
- Urine albumin-to-creatinine ratio
- Urinalysis components
- Cystatin C when included
- Electrolytes such as sodium and potassium when included
Why people order this test
- Screen for kidney disease when risk factors are present
- Monitor kidney function in a known condition
- Check for protein leaking into the urine
- Follow the effect of medications that can affect the kidneys
- Evaluate swelling, fatigue, or changes in urination
- Establish baseline values for future comparison
How to prepare
No special preparation is usually required, but some providers ask for a urine sample in addition to blood. Follow the instructions provided with the test order, and stay hydrated unless told otherwise.
Understanding your results
Results are usually available within one to three business days, and trends over time are important because they can be more informative than a single value. eGFR estimates how well the kidneys filter, while urine albumin shows whether protein is leaking. A qualified healthcare provider should interpret the results and determine whether follow-up testing is needed.
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Idaho
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Frequently Asked Questions
What do kidney health tests measure?
They measure waste products such as creatinine and urea in the blood, estimate filtration with eGFR, and check urine for albumin and other abnormalities.
Who should be screened for kidney disease?
Screening is commonly recommended for people with diabetes, high blood pressure, heart disease, or a family history of kidney failure, and for those taking certain medications.
What is eGFR?
eGFR stands for estimated glomerular filtration rate. It is calculated from creatinine and other factors to estimate how well the kidneys are filtering.
Why is urine albumin important?
Albumin is a protein that healthy kidneys keep in the blood. Finding it in urine can be an early sign of kidney damage, sometimes before eGFR changes.
Can kidney tests detect problems early?
Yes. Blood and urine testing can reveal reduced filtration or protein leakage before symptoms appear, which allows earlier monitoring and management.
Ready to get tested?
Order online and visit a collection site near you, or choose a mail-in kit. No referral and no insurance required.
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