| Angiopoietin-2 | 56.919 | UniProtKB |
| Angiopoietin-1 | 57.513 | UniProtKB |
| Angiogenin | 16.55 | UniProtKB |
| Androstenedione | 0.2864085 | Found via general search |
| Amphiregulin | 27.895 | UniProtKB |
| Alpha-tocopherol | 0.4307 | UniProtKB |
| Alpha2-macroglobulin (a2M) | 163.291 | UniProtKB |
| Alpha-2 globulin | 52 | Found via general search |
| Alpha1-fetoprotein transcription factor short variant | 36.41 | UniProtKB |
| Alpha-1-antitrypsin polymer | 480 | Found via general search |
