When should you have a pregnancy test?

Pregnancy tests can be carried out from the first day of a missed period, or at least 21 days after unprotected sex if the patient is unsure of their menstrual cycle. Some sensitive tests can detect pregnancy before a missed period.

Conducting the Test

Urine samples can be collected at any time of day. Instructions vary, but generally, the test involves urinating on a stick, with results appearing within minutes.

Availability of Pregnancy Tests

Pregnancy testing kits are available for purchase from pharmacists and supermarkets, providing quick and private results.
Free pregnancy tests are offered at:
  • Sexual health services
  • Some young people’s services (call the national sexual health helpline on 0300 123 7123 for details)
  • Brook centres (for under-25s; find your nearest centre)
  • Some GP surgeries.

Test Mechanism

Pregnancy tests detect human chorionic gonadotrophin (hCG), produced approximately six days post-fertilization.

Effectiveness with Contraception

Pregnancy tests remain effective for patients on the pill, as contraceptive hormones do not interfere with test results. No contraception method is 100% effective; thus, a pregnancy test is crucial if there’s suspicion of pregnancy.

Summary

We have explained when you should have a pregnancy test. We hope you understand it better now.