The average DPO for a positive pregnancy test is As you can see from the chart above, even a few days make a huge difference. This data also correlates with a retroactive look at pregnancy test accuracy studies published in the National Library of Medicine from to Further, the study also found that the majority of home tests were not actually able to detect levels this low, and when they were, home-users often misread the tests squinters.
A level not reached until 12 to 14 days after ovulation around the time of a missed period. The suggestion based on this data was that a test should not be taken earlier than 4 days before a missed period. This likewise confirms the data shown above for hCG levels by days after implantation that suggested day 3 to 5 would be the earliest time frame for a positive test depending on brand.
By ovulation, using the 8- to day average, this would be day 11 to 15, again around the time of a missed period. Given all of this, the day of your missed period is a fairly safe bet, but about 4 days after is more ideal, as percent of women who were indeed pregnant got a positive test at that point over at Fertility Friend and data on hCG rises in pregnancy against test sensitivity would support a highly accurate result as well.
For the most accurate results, aim for 4 days after a missed period or 16 to 19 days after ovulation. Avoid testing any earlier than 4 days before a missed period or 10 DPO.
So, how do you know when to take a pregnancy test? Send me. Note: an email address is necessary if you wish to receive notifications. If provided, it will not be published publicly. Inline Feedbacks. Load More Comments. You want to know as early as possible, but when is that?
Use this calculator to help you decide when to take your first home pregnancy test. Avoid disappointment of a false negative by not testing too early. Find out here when it is best to test! Not set. Select 21 days 22 days 23 days 24 days 25 days 26 days 27 days 28 days 29 days 30 days 31 days 32 days 33 days 34 days 35 days 36 days 37 days 38 days 39 days 40 days 41 days 42 days 43 days 44 days 45 days 46 days 47 days 48 days 49 days 50 days. Ask your question. Sign up and start tracking.
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