Pregnancy Test Information & Guidance

Pregnancy Test Information & Guidance

Home pregnancy testing is a simple and reliable way to check for pregnancy in the privacy of your own home. This guide explains how pregnancy tests work, when to test for the most accurate results, and how to understand your results clearly.

This information is provided for general guidance and screening awareness only and does not replace professional medical advice.

How pregnancy tests work

Home pregnancy tests detect human chorionic gonadotropin (hCG) — a hormone produced during pregnancy. hCG is present in urine shortly after a fertilised egg implants in the uterus.

Most home pregnancy tests use a urine dip strip or cassette that reacts to hCG and displays a clear positive or negative result within minutes.

When is the best time to take a pregnancy test?

For the most accurate results:

  • Test from the first day of your missed period

  • Early testing is possible, but results may be less reliable

  • Use first-morning urine when hCG levels are most concentrated

  • If testing early and the result is negative, repeat the test after 48–72 hours

Testing too early is the most common cause of false negative results.

How accurate are home pregnancy tests?

When used correctly, most home pregnancy tests are over 99% accurate from the day of a missed period.

Accuracy depends on:

  • Timing of the test

  • Correct usage

  • Sensitivity of the test

  • Proper storage of the test strips

For official medical confirmation, a healthcare professional should always be consulted.

Understanding pregnancy test results

  • Positive result: Two lines or a “+” symbol indicates hCG has been detected

  • Negative result: One line or a “–” symbol indicates no detectable hCG

  • Invalid result: No lines or unclear markings — repeat the test with a new strip

Always read results within the time window stated in the instructions.

What to do after a positive result

If your test is positive:

  • Contact your GP or healthcare provider

  • Arrange a confirmation test if advised

  • Begin prenatal care as early as possible

If your result is negative but pregnancy is still suspected, repeat testing after a few days.

Authoritative health guidance

For trusted medical guidance on pregnancy testing and next steps, you can visit:

These resources provide official UK healthcare advice and support.

Pregnancy test kits available from VivaTest

If you are looking for a reliable home testing option, view our VivaTest Pregnancy Test Kit, available in convenient 2-pack and 5-pack options for early and repeat testing.

👉 View VivaTest Pregnancy Test Kit

Important information

  • Home pregnancy tests are for screening purposes only

  • Results should be confirmed by a healthcare professional

  • Follow instructions carefully for best accuracy

  • Store tests in a cool, dry place and check expiry dates