Peritoneal Dialysis Adequacy Calculator

Weekly Kt/V, creatinine clearance, and PET transport classification for peritoneal dialysis.

Medical Disclaimer

This calculator is for informational and educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making decisions about your health. Never disregard professional medical advice or delay seeking it because of results from this tool.

Inputs

Dialysate Urea (mg/dL)

Serum BUN (mg/dL)

Daily Drain Volume (L)

24h Urine Volume (L)

Urine Urea (mg/dL)

Weight (kg)

Height (cm)

Age (years)

Sex

D/P Creatinine (4hr PET)

Tab to move between fields

Results

Total Weekly Kt/V

1.93

Peritoneal Kt/V1.49

Residual Renal Kt/V0.45

Weekly CrCl (L/wk/1.73m²)43.5

PET Transport Type (1-4)3

How to Use This Calculator

Enter dialysate urea (mg/dL) and serum BUN (mg/dL) from current labs.
Enter daily drain volume (L), 24-hour urine volume (L), and urine urea (mg/dL).
Enter patient weight (kg), height (cm), age (years), and sex.
Enter the D/P creatinine ratio from a 4-hour peritoneal equilibration test (PET).
Read total weekly Kt/V: KDOQI target >= 1.7 for CAPD, and weekly peritoneal CrCl (L/wk/1.73m2).

How the result changes with Serum BUN (mg/dL)

Serum BUN (mg/dL)	Total Weekly Kt/V
31	3.74
106	1.1
195	0.6
270	0.43

What each input means

Dialysate Urea (mg/dL): Urea concentration in peritoneal dialysate effluent.
Serum BUN (mg/dL): Serum blood urea nitrogen.
Daily Drain Volume (L): Total daily peritoneal dialysis drain volume.
24h Urine Volume (L): Residual 24-hour urine output.
Urine Urea (mg/dL): Urea concentration in 24-hour urine.
Weight (kg): Body weight.
Height (cm): Height for BSA and TBW.
Age (years): Patient age.
Sex: Biological sex.
D/P Creatinine (4hr PET): Dialysate-to-plasma creatinine ratio at 4 hours (PET).

What each result means

Total Weekly Kt/V: Combined peritoneal + residual renal. KDOQI target >= 1.7 for CAPD.
Peritoneal Kt/V: Weekly peritoneal dialysis component of Kt/V.
Residual Renal Kt/V: Weekly residual renal function component.
Weekly CrCl (L/wk/1.73m²): Peritoneal creatinine clearance normalized to 1.73m² BSA. Target >= 50.
PET Transport Type (1-4): 1=Low, 2=Low-avg, 3=High-avg, 4=High transporter.

How this is calculated

Worked example, using the default values

Identify Input Parameters
4 parameters
Dialysate Urea (mg/dL) = 50, Serum BUN (mg/dL) = 60, Daily Drain Volume (L) = 10, 24h Urine Volume (L) = 0.5 = 10 input(s) provided
Calculate Total Weekly Kt/V
Total Weekly Kt/V = peritonealKtV + renalKtV
1.934 = 1.934
Calculate Peritoneal Kt/V
Peritoneal Kt/V = (dpUrea * dailyDrainVolume * 7) / tbw
1.488 = 1.488
Calculate Residual Renal Kt/V
Residual Renal Kt/V = (urineUrea / serumUrea) * (urineVolume24h * 7) / tbw
0.446 = 0.446