| graphQC | Representate the compounds area (normalized or not) as a function of their injection order to study trends. | 
| QCcorrectionLOESS | Generate values for metabolites normalization | 
| QCcorrectionMultiLOESS | Generate values for metabolites normalization | 
| QCcorrectionMultiPoly3 | Generate values for metabolites normalization | 
| QCcorrectionMultiPoly4 | Generate values for metabolites normalization | 
| QCcorrectionMultiPoly6 | Generate values for metabolites normalization | 
| QCcorrectionSinglePoly3 | Generate values for metabolites normalization | 
| QCcorrectionSinglePoly4 | Generate values for metabolites normalization | 
| QCcorrectionSinglePoly6 | Generate values for metabolites normalization | 
| QCregression | Equation to be used internally to predict values from a regression curve of grade 3 | 
| QCregression4 | Equation to be used internally to predict values from a regression curve of grade 4 | 
| QCregression6 | Equation to be used internally to predict values from a regression curve of grade 6 |