| from conception | from LMP | (mIU/ML or IU/L) |
| 7 days | 3 weeks | 0 to 5 |
| 14 days | 28 days | 3 to 426 |
| 21 days | 35 days | 18 to 7,340 |
| 28 days | 42 days | 1080 to 56,500 |
| 35 - 42 days | 49 - 56 days | 7,650 to 229,000 |
| 43 - 64 days | 57 - 78 days | 25,700 to 288,000 |
| 57 - 78 days | 79 - 100 days | 13,300 to 253,000 |
| 17 - 24 weeks | 2nd trimester | 4060 to 65,400 |
| 25 wks to term | 3rd trimester | 3640 to 117,000 |
| After several days postpartum | < 5 |