What it measures
How concentrated your urine sample was, measured by the muscle waste in it.
Nothing about your health on its own - it exists to correct the albumin reading for how much water you had drunk.
Why it matters for how long you stay well
It carries no message of its own. Its whole job is to make the albumin result trustworthy, and a trustworthy albumin result is what protects your kidneys.
How it shows up in daily life
It is not about you so much as about the sample: a first-morning sample is concentrated, an afternoon one is dilute.
High and low readings
When it reads high
A concentrated sample, usually mild dehydration; the corrected ratio is the number to read.
When it reads low
A dilute sample, usually because you had drunk plenty; again, read the corrected ratio.
What moves it
Daily life
- how much you had drunk before giving the sample
- how much muscle you carry
Read it with
Markers that move this one, or that this one moves. One number read alone can mislead.
- Urine albumin, correctedKnown mechanism
As this rises, Urine albumin falls as it rises
A concentrated sample has more creatinine in it, which pulls the corrected ratio down. That is not a fault; that is the correction doing its job.
Common questions
What does Urine Creatinine measure?
How concentrated your urine sample was, measured by the muscle waste in it. Nothing about your health on its own - it exists to correct the albumin reading for how much water you had drunk.
What does a high Urine creatinine result usually mean?
A concentrated sample, usually mild dehydration; the corrected ratio is the number to read.
What does a low Urine creatinine result usually mean?
A dilute sample, usually because you had drunk plenty; again, read the corrected ratio.
What is the usual reference range for Urine creatinine?
A broad adult reference band is 20–320 mg/dL. Labs differ, so read your result against the band printed on your own report.
Educational only, not a diagnosis. A single number means little without your history and the rest of your panel, so discuss your own results with your physician.
Typical adult reference band
- Adults
- 20–320 mg/dL
Labs differ. The band printed on your own report is the one that applies to your result.
Reported in mg/dL
Worth knowing
It is measured mainly to say how dilute the sample was, so the albumin result can be corrected for it.
Have a report with this marker on it? Read it in context.
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