Urine Protein to Creatinine Ratio (PCR) Calculator

Your details

Select the unit your laboratory reports for urine protein.
Protein concentration measured from a spot (random) urine sample.
mg/dL
Select the unit your laboratory reports for urine creatinine.
Creatinine concentration from the same spot urine sample.
mg/dL
Adjust interpretation to the relevant clinical setting.
Protein:Creatinine RatioElevated
0.2g/g (mg/mg)

Spot urine PCR, a validated surrogate for 24-hour urinary protein excretion

Estimated 24-hr protein excretion0.2g/day
Ginsberg classificationElevated - further investigation required (0.2-3.5 g/g)
KDIGO proteinuria categoryA2 - Moderately increased (150-500 mg/day)
Protein (normalized)30mg/dL
Creatinine (normalized)150mg/dL
0.2 g/g
Normal<0.2Mildly elevated0.2-0.5Elevated0.5-3.5Nephrotic range3.5+

PCR is 0.200 g/g - approximately 200 mg/day protein excretion.

  • A PCR of 0.200 g/g suggests mildly to moderately elevated protein excretion. This may be transient (after exercise, fever, or stress) or a sign of early kidney disease.
  • Repeat the test on a first-morning urine sample to rule out orthostatic (postural) proteinuria, which is benign and very common in young adults.

Next stepRepeat on first-morning void to confirm. If elevated on repeat, order serum creatinine, eGFR, urine sediment, and blood pressure assessment.

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