Weight to Age-in-Week Table for Rat
| Age-in-Week | Wistar | S.D. | ||
| ♂ | ♀ | ♂ | ♀ | |
| 3 | 48±5.7 | 38±3.0 | 54±2.6 | 57±2.8 |
| 4 | 79±8.8 | 65±4.0 | 95±2.8 | 85±3.6 |
| 5 | 116±12 | 96±5.0 | 140±10 | 109±6.0 |
| 6 | 149±16 | 122±8.0 | 195±9.0 | 145±10 |
| 7 | 195±20 | 156±8.0 | 245±16 | 172±11 |
| 8 | 240±22 | 182±7.0 | 311±16 | 197±12 |
| 9 | 291±22 | 197±9.0 | 334±26 | 214±15 |
| 10 | 321±22 | 218±7.0 | 361±21 | 235±10 |
| 11 | 342±22 | 229±9.0 | 400±27 | 245±15 |
| 12 | 362±22 | 240±17 | 432±27 | 256±18 |
Remarks：
- n=30
- The figures stand for the weight average± standard deviation(g)
- Updated at Feb. 1998.