Beta Levels in Early Pregnancy and Beyond

Weeks after LMPDays after conception

HCG level for single baby

(mIU/hCG)

3 Weeks 7 0 to 5

4 Weeks 14 5 to 426

5 Weeks 21 18 to 7340

6 Weeks 28 1,080 to 56,500

7 to 8 Weeks 35 to 42 7,650 to 229,000

9 to 12 Weeks 49 to 70 25,700 to 288,000

13 to 16 Weeks 77 to 100 13,300 to 254,000

17 to 24 Weeks   4,060 to 165,400

25 Weeks to Birth   3,640 to 117,000

4 to 6 Weeks Post Birth

  Less than 5

Weeks of pregnancy after last menstrual period

Days after conception

Approximate hCG levels for single baby pregnancy (mIU/ml)

Week 3 7 0 to 5

Week 4 14 (next period due) 5 to 430

Week 5 21 180 to 7400

Week 6 28 1,100 to 56,500

Weeks 7 to 8 35 to 42 7,600 to 230,000

Weeks 9 to 12 49 to 70 25,300 to 290,000

Weeks 13 to 16 77 to 100 14,000 to 243,000

Weeks 17 to 24 4,000 to 165,000

Weeks 25 to birth of baby

3,200 to 90,000

4 to 6 weeks after birth Less than 5