| ART | Assisted Reproductive Technology |
| FDR | False Discovery Rate |
| GPC | Glycerylphosphorylcholine |
| GPE | Glycerylphosphorylethanolamine |
| HCA | Hierarchical Clustering Analysis |
| HPLC-MS/MS | High-Performance Liquid Chromatography-tandem Mass Spectrometry |
| LH | Luteinizing Hormone |
| MA | Maturation Arrest |
| NOA | Non-obstructiveAzoospermia |
| OA | Obstructive Azoospermia |
| OPLS-DA | Orthogonal Partial Least Squares-Discriminant Analysis |
| PCA | Principal Component Analysis |
| PLS-DA | Partial Least Squares-Discriminant Analysis |
| ROS | Reactive Oxygen Species |
| VIP | Variable Importance in the Project |