There are STONE, nephrolithometric nomogram, Guy's stone score, and S-ReSC for scoring systems that are used as predictors of outcome before implementing PCNL. These systems were suggested based on the number of stones, stone burden, location, experiences of operators and anatomical abnormality.

Scoring systems used as predictive factors used as outcome before executing PCNL are STONE, nephrolithometric nomogram, Guy’s stone score, S-ReSC. These systems are suggested based on the number of stones, stone burden, location, experience of the surgeon, anatomical abnormality, etc.

Before conducting PCNL, scoring system used as predict factors for outcome has STONE, nephrolithometric nomogram, Guy's stone score, and S'ReSC. These systems were suggested based on the number of stones, stone burden, location, surgeon's experience, anatomical abnormality and so on.