Urine Creatinine levels: what's normal, high and low
A measure used to standardize other urine tests (like albumin) for hydration level.
Medically reviewed by Youmna DiStefano, MD · Last reviewed September 2026
The short answer
Urine Creatinine is measured with a urine (random) sample; no fasting is needed. A typical reference range is 20.0 – 320 mg/dL. At TestWell it's $24.99 all-in as Microalbumin (Urine Albumin/Creatinine Ratio), results in 1–3 business days, drawn at Quest. An out-of-range result is a prompt to look closer, not a diagnosis.
- Units
- mg/dL
- Sample
- Urine (random)
- Fasting
- Not required
- Results
- 1–3 business days
- Price
- $24.99
- Labs
- Quest
Urine Creatinine Reference Range
These are the typical adult reference ranges used by major US labs. Your report will include the specific range used by the lab that processed your sample.
| Population | Range |
|---|---|
| age 18+ | 20.0 – 320 mg/dL |
Reference ranges are educational. Always interpret your result with the specific range printed on your lab report and discuss anything outside the range with a clinician.
Have a result in hand? analyze it with your AI assistant using these reviewed ranges, or run it through our explainer. Tools: look up another marker's range · convert lab units
How do you get a Urine Creatinine test?
Order online, a licensed physician reviews the requisition, and you walk into a nearby lab for the draw. Urine Creatinine is available on its own or inside these panels — panels cost less per marker when you want the fuller picture.
| Option | Includes | Price |
|---|---|---|
| Microalbumin (Urine Albumin/Creatinine Ratio) | This marker only | $24.99 |
Quest vs. Labcorp for Urine Creatinine: which lab should you pick?
Both are CLIA-certified national labs and the result is clinically equivalent, so pick whichever location is closer. Your report will print that lab's own reference range, which can differ slightly from the table above.
| Lab | Available | Price |
|---|---|---|
| Quest Diagnostics | Yes | $24.99 |
| Labcorp | No | — |
| BioReference (NY & NJ) | No | — |
Need help choosing a location? Use the lab finder to see draw sites near your ZIP.
Frequently asked
Do I need a doctor's order to test my urine creatinine?
No. TestWell's licensed physician network reviews and approves your order — usually within minutes. You can place an order online without an in-person visit or a referral from your own doctor.
How long does it take to get Urine Creatinine results?
Most Urine Creatinine results are available in 1–3 business days after your specimen arrives at the lab. You'll get an email the moment your results are ready, with everything viewable in your TestWell portal.
How much does a Urine Creatinine test cost?
Our Microalbumin (Urine Albumin/Creatinine Ratio) starts at $24.99. That's the all-in price — no copays, no insurance hoops, no surprise bills. HSA and FSA cards are accepted.
Do I need to fast before my Urine Creatinine test?
Fasting is not required for the Urine Creatinine test. You can have your blood drawn any time of day.
Which lab will process my Urine Creatinine test?
Your test will be processed by Quest Diagnostics, Labcorp, or BioReference depending on which is closest to you and which lab carries the test. All three are CLIA-certified and trusted by hospitals nationwide. You'll choose your lab during checkout from 4,000+ locations.
What can throw off a Urine Creatinine result?
Creatine supplements can change a Urine Creatinine result without anything being wrong. Creatine supplements can raise Urine Creatinine — A urine ACR can read lower than true; mention creatine if the ratio is used for screening. Each is explained on our physician-reviewed "Before your test" pages; when one applies, remove it and retest.
Ready to test your urine creatinine?
Order in two minutes, get physician-approved, and visit a lab the same day. Starts at $24.99.