How soon before a missed period can you take a pregnancy test?

No set time. Usually, the test will turn positive 7-10 day after conception. Be sure to test your first urine of the day. It is more concentrated and contain more of the HCG hormone.

Related Questions

How soon before your missed period can you take a pregnancy test?

About 2 days. Sensitive tests are reliable about 11 days after conception, so up to 2 days (maybe 3) before an expected period. Before tehat, they are inconsistent and not helpful. Read more...