Lab Tests for Kidney Disease
Chronic kidney disease (CKD) affects an estimated 37 million American adults, and most don't know they have it because early stages produce few symptoms. Lab testing is the primary way to detect and monitor kidney disease. Key markers include creatinine and BUN (from a basic or comprehensive metabolic panel), estimated GFR for staging, and cystatin C for a more accurate filtration assessment. In moderate or advanced CKD, parathyroid hormone (PTH) with calcium helps track the mineral and bone changes kidney disease can cause. Regular monitoring is especially important if you have diabetes, hypertension, or a family history of kidney disease. JustLabs lets you order kidney function tests online at transparent prices.
Recommended Tests
All 5 recommended tests
$123.50 + one $18 order fee = $141.50 all-in
Understanding Your Results
| Test | Normal Range | Low Means | High Means |
|---|---|---|---|
| Creatinine | 0.6–1.2 mg/dL | Normal kidney filtration | Reduced kidney function |
| BUN | 7–20 mg/dL | Normal protein metabolism | Kidney impairment or dehydration |
| eGFR | >60 mL/min/1.73m² | CKD staging: 15-59 = Stage 3-4 | Normal kidney filtration rate |
| Cystatin C | 0.6–1.0 mg/L | Good kidney filtration | More sensitive early kidney damage marker |
| PTH, Intact | 14–64 pg/mL (adults) | Uncommon in CKD; read together with calcium | With normal or low calcium, consistent with secondary hyperparathyroidism |
How to Order
Order Online
Select your tests and pay securely. A licensed physician authorizes your order.
Visit Quest Diagnostics
Walk into any of 2,200+ Quest locations nationwide. No appointment needed.
Get Results
Results available in your account within 1-2 business days.
Frequently Asked Questions
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Content reviewed for accuracy by the JustLabs editorial team.