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Table 1 Reference values for kidney injury biomarkers. Data are given as mean (minimum- maximum) or cut-off values

From: Novel renal markers for the assessment of renal integrity in patients undergoing knee arthroplasty – a pilot study

Parameter Reference values/cut of value
P-NGAL 62.1 (40.8–104) ng/mL
U-NGAL 25.3 (2.4–154) ng/mL
>  104 ng/mL 2
U-NGAL/crea > 300 ng/mg·crea
U- KIM1 1.11 (0.225–3.20) μg/g·crea
U- IL-18 > 65 pg/mL
U- L-FABP 1.6 (0.3–8.4) μg/g·crea
eGFR (mL/min/1.73m2)
 Healthy ≥90
 Mild renal deterioration 60–89
 Mild to moderate 45–59
 Moderate to severe 30–44
 Severe 15–29
 End stage < 15
 Female 50–90 μmol/L
 Male 60–100 μmol/L
 P-cystatin C 0–1.1 mg/L
  1. P plasma, U urine, Crea creatinine, eGFR calculated creatinine clearance, CystC cystatin C, U-NGAL/crea Neutrophil gelatinase associated lipocalin/creatinine, KIM-1/crea Kidney injury molecule-1, IL-18 Interleukin-18, U-L-FABP/crea liver-type fatty acid-binding protein (U-L-FABP)