Positive Pregnancy Test at 3 Weeks: hCG Level Checker

Your details

Count from the first day of your last menstrual period (LMP). Week 3 is about one week after conception.
weeks
Enter the result of your serum (blood) beta-hCG test.
mIU/mL
Most standard home urine tests detect hCG at 20-25 mIU/mL. Early-result tests can detect from 6-10 mIU/mL.
Level statusNormal range
Within the normal range for this week

Whether your hCG is in the typical range for your gestational week

Typical range minimum6mIU/mL
Typical range maximum71mIU/mL
Expected home test resultLikely positive (hCG 35 >= 20 mIU/mL threshold)
  • Week 3: hCG starts (6-71 mIU/mL)
  • Week 4: Blood test reliable (10-750)
  • Week 5: Most home tests detect (217-7,138)
  • Weeks 8-10: Peak hCG (up to 210,000)
  • Week 12: hCG begins to decline

Within the normal range for this week

  • At 3 weeks gestational age (about one week after conception), hCG has just started being produced by the implanting embryo.
  • The typical range for week 3 is 6 to 71 mIU/mL - there is wide natural variation.
  • Your level of 35 mIU/mL is at or above the 20 mIU/mL detection threshold, so a home urine test would likely show positive.
  • A single hCG value matters less than the trend. If in doubt, a follow-up draw 48 hours later is the most informative next step.

Next stepShare these results with your midwife or doctor. A blood test trend over 48 hours is more reliable than any single reading or a home urine test.

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