| Active principles | Rating | Bibliogr. | Expand | |
|---|---|---|---|---|
| 1 | Iodine Radioisotopes | 100 | + | |
| 2 | Carbon Radioisotopes | 75 | + | |
| 3 | Fluorine Radioisotopes | 63 | + | |
| 4 | Phosphorus Radioisotopes | 60 | + | |
| 5 | Sulfur Radioisotopes | 57 | + | |
| 6 | Tritium | 53 | + | |
| 7 | Radioactive Tracers | 34 | + | |
| 8 | Xenon Radioisotopes | 34 | + | |
| 9 | Sodium Radioisotopes | 32 | + |