Current promotion
Kidney Function Tests: eGFR, Creatinine & Urine Albumin Panels
Measure how well your kidneys filter, from a quick baseline panel to a deep blood-and-urine workup.
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Individual kidney tests from $16.76 and multi-test panels from $49.56 after the 20% discount (promotional pricing at time of writing).
At a glance
Kidney function testing measures how well your kidneys filter waste and balance fluids using markers like eGFR, creatinine, BUN, and the urine albumin-to-creatinine ratio (uACR). These panels are for adults who want an objective baseline on kidney health, especially those managing high blood pressure, diabetes, or frequent NSAID use. Every result is physician-reviewed and delivered securely online so you can review it with your doctor.
Best suited for
- Adults with high blood pressure or diabetes, the two most common sources of kidney strain
- Anyone with a family history of kidney disease or existing heart disease
- People who regularly use NSAIDs or other medications that can stress the kidneys
- Those noticing unexplained swelling, fatigue, or changes in urination they want to discuss with a doctor
- Health-conscious adults who want a filtration and electrolyte baseline to track over time
What's included
Renal Function Panel
Measures BUN, creatinine, electrolytes, calcium, phosphorus, albumin, and glucose in one blood draw
Albumin Random Urine Test with Creatinine (uACR)
Urine albumin-to-creatinine ratio, a marker associated with early kidney strain
Urinalysis Complete Test
Physical, chemical, and microscopic evaluation of a urine sample
Protein, Total, Random Urine Test
Screens a single urine sample for protein (proteinuria)
Creatinine Clearance Test
Blood sample plus 24-hour urine collection to estimate glomerular filtration rate
KH-1 Kidney Function Panel
3 tests, 42 biomarkers; blood and urine
KH-2 Kidney Function Panel
5 tests, 50 biomarkers; blood and urine
Kidney #1 Baseline Blood and Urine Test Panel
3 tests, 82 biomarkers
Kidney #2 Essential Blood and Urine Test Panel
5 tests, 84 biomarkers
Kidney #3 Extreme Blood and Urine Test Panel
10 tests, 99 biomarkers
Deep-dive the key markers: eGFR, Fasting Glucose, HbA1c, hs-CRP, LDL-C, HDL-C, Triglycerides, ALT
Key biomarker ranges
Commonly used adult reference ranges for markers this panel measures, labs vary, so always interpret results against your lab's stated ranges and with your doctor.
For eGFR, lower is worse: 90+ is consistent with full kidney function, while sustained values below 60 are the commonly used threshold of concern.
| Zone | Range |
|---|---|
| Kidney failure range | 0–15 mL/min/1.73m² |
| Reduced | 15–60 mL/min/1.73m² |
| Mildly reduced | 60–90 mL/min/1.73m² |
| Optimal | 90–120 mL/min/1.73m² |
Commonly used reference ranges place fasting glucose at 70–99 mg/dL; results vary with sleep, stress, and recent illness, and labs differ slightly.
| Zone | Range |
|---|---|
| Low | 50–70 mg/dL |
| Optimal | 70–100 mg/dL |
| Prediabetic range | 100–126 mg/dL |
| Diabetic range | 126–160 mg/dL |
Commonly used reference ranges place HbA1c below 5.7%; conditions affecting red blood cells can skew results, so labs and clinicians interpret in context.
| Zone | Range |
|---|---|
| Optimal | 4–5.7 % |
| Prediabetic range | 5.7–6.5 % |
| Diabetic range | 6.5–10 % |
The importance of testing
Your kidneys regulate fluids, filter waste, balance electrolytes, and support blood pressure and bone health. High blood pressure, diabetes, dehydration, and certain medications can quietly stress the kidneys long before symptoms appear, which is why lab testing is one of the few ways to get an early, objective read on how they are performing.
The core filtration markers tell most of the story. eGFR and creatinine estimate how effectively your glomeruli are filtering, BUN adds context on waste clearance, and the urine albumin-to-creatinine ratio (uACR, or microalbumin) flags small amounts of protein in urine, a marker associated with early kidney strain. Some panels add cystatin C, a sensitive filtration marker that is less affected by muscle mass.
Electrolytes and minerals round out the picture. Sodium, potassium, chloride, and CO2 reflect acid-base and fluid balance, which influence heart and nerve function, while calcium, phosphorus, magnesium, and uric acid speak to bone-mineral balance and metabolic risk. Larger panels also fold in glucose, hemoglobin A1c, a lipid panel, and hs-CRP, markers associated with the cardiovascular and metabolic conditions most closely linked to kidney stress.
Because kidney markers shift gradually, trends matter more than any single result. Retesting over time shows how medications, hydration, diet, and blood pressure control are affecting your numbers, and gives you and your clinician concrete data to act on sooner.
Promo code
KH20Save 20% with code KH20, current promotion; confirm final pricing on the partner page.
Ready to get your numbers? Order online, visit a nearby draw site, and receive private results to review with your doctor.
Order NowFrequently asked questions
What do kidney function tests actually measure?
Kidney function tests measure filtration markers (eGFR, creatinine, BUN), urine albumin-to-creatinine ratio, electrolytes (sodium, potassium, chloride, CO2), and minerals like calcium, phosphorus, and magnesium. Depending on the panel, they may also include cystatin C, uric acid, a comprehensive metabolic panel, glucose and hemoglobin A1c, lipids, or hs-CRP, markers associated with the metabolic and cardiovascular conditions linked to kidney strain.
Can I order kidney tests without a doctor's visit?
Yes, a doctor's authorization is included with every purchase, so no separate appointment or referral is needed. You order online, visit one of about 2,100 Quest locations nationwide, and receive physician-reviewed results in your secure online account. No insurance is required, and HSA/FSA funds are accepted for eligible services.
Which kidney panel should I choose?
The Renal Function Panel is the most affordable starting point, covering BUN, creatinine, electrolytes, calcium, phosphorus, albumin, and glucose in a single blood test. If you want urine markers too, the baseline blood-and-urine panels add urinalysis and urine albumin, while the larger KH-2, Essential, and Extreme panels layer in additional filtration, mineral, and metabolic markers. Your choice depends on whether you want a quick check or a comprehensive baseline to track over time, when in doubt, review the options with your doctor.
How quickly will I get my results?
Most results are available within 24 to 48 hours, though some tests take longer to process. Every result is physician-reviewed before release and delivered to your secure online account, formatted so you can bring it to your next appointment.
Is this testing available in every state?
No, direct-to-consumer lab testing is restricted or prohibited in New York, New Jersey, and Rhode Island, so residents of those states may be blocked at the partner's checkout. If you live elsewhere in the US, you can typically order online and test at any participating Quest location.
Will these tests confirm kidney disease?
No, these panels measure and track kidney-related markers; they are not intended to confirm any condition on their own. Out-of-range results such as a reduced eGFR or elevated urine albumin are flags to review with your doctor, who can interpret them in the context of your history, medications, and repeat testing.
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