How long can a test strip measure pregnancy?

Pregnancy can be detected by a test paper at 10-14 days of pregnancy.

Human chorionic gonadotropin (HCG) is gradually produced in the body after pregnancy, which is a key indicator of pregnancy detection. HCG levels generally begin to rise after implantation of fertilized eggs, and gradually increase with the passage of pregnancy. HCG levels in urine are usually sufficient to be detected by the test paper at 10-14 days of pregnancy.

If there are doubts about the test results, or if there are other special conditions, such as abnormal bleeding, abdominal pain, etc., it is recommended to seek medical advice promptly for blood tests or other related tests.