A positive pregnancy test typically detects the hormone hCG, which starts building after implantation, around 6-10 days post-ovulation. Most home urine tests show positive results as early as 10-14 days after conception, often 1-2 days before or after a missed period for reliable accuracy.
Earliest Detection
Sensitive early-detection tests may pick up hCG 6-8 days after conception, but false negatives are common due to low hormone levels. Blood tests at a doctor's office can confirm earlier, around 7-10 days post-conception.
Optimal Timing
Wait until the first day of your missed period (about 14 days post-ovulation) for over 99% accuracy with standard tests. Testing too early risks inaccuracy; retest in a few days if negative.
Factors Affecting Results
hCG doubles every 48 hours, so timing, test sensitivity (e.g., 25 mIU/mL), and urine concentration matter. Always follow instructions and consult a healthcare provider for confirmation.
