Convert serum creatinine between mg/dL used in the United States and µmol/L used in most of the world. The factor is 88.4.
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Scientific references
The conversion
Multiply mg/dL by 88.4 to get µmol/L, or divide µmol/L by 88.4 to get mg/dL. A creatinine of 1.0 mg/dL equals 88.4 µmol/L.
Why two systems exist
The United States reports conventional units while most other countries and journals use SI units. Papers, travel records and international guidelines constantly mix them.
Understanding the result
The typical adult range runs roughly 0.6 to 1.3 mg/dL, about 53 to 115 µmol/L, higher in muscular people and men. Interpretation always pairs the number with eGFR.
A note on trends
A rising creatinine matters more than any single value, because it tracks falling kidney filtration with a delay of one to two days.