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Kidney Function

Creatinine, Serum

Normal range 0.6-1.3 mg/dL (53-115 µmol/L SI). Specimen: Serum or plasma.

Also known as: serum creatinine, Cr, SCr.

0.6-1.3 mg/dLThreshold: read below

Reference range

Conventionalmg/dL
0.61.3
SIµmol/L
53115

Combined adult band. LabVals does not publish separate men's, women's, or pediatric ranges for Creatinine, Serum; those can be narrower than the band shown.

Creatinine, Serum reference range, specimen, and conversion details
SpecimenSerum or plasma
Conventional range0.6-1.3 mg/dL
SI range53-115 µmol/L
Conversion factor×88.4 (conventional → SI)
Threshold> 4.0 mg/dL (or a rapid rise) indicates significant renal impairment
PanelKidney Function

Convert any Creatinine, Serum result between units on the unit converter.

What is the normal range for Creatinine, Serum?

The standard teaching reference range for Creatinine, Serum is 0.6-1.3 mg/dL in conventional units, or 53-115 µmol/L in SI units. This value is measured in serum or plasma.

What threshold is taught for Creatinine, Serum?

For Creatinine, Serum, the commonly taught threshold is: > 4.0 mg/dL (or a rapid rise) indicates significant renal impairment.

Source: Adult reference values compiled from Pagana & Pagana, Mosby's Diagnostic and Laboratory Test Reference, and Fischbach & Dunning, A Manual of Laboratory and Diagnostic Tests. Reference ranges vary by laboratory, method, age, sex, and population - always use the range printed on the actual result.

At the bedside

Nursing considerations

  • A more specific kidney marker than BUN because it reflects glomerular filtration.
  • Higher in people with greater muscle mass; interpret with eGFR.
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