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  1. Pregnancy tests: How does it work, how do I take it, and when?

    Jul 25, 2023 · A pregnancy test is around 99% reliable. It works by measuring levels of HCG in either the blood or urine. HCG can be present in the blood and urine approximately 10–14 days after conception.

  2. Pregnancy Tests: When to Take One, Accuracy, and Results - WebMD

    Aug 4, 2025 · Think you might be pregnant? Consider taking a home pregnancy test. But before you do, learn how pregnancy tests work, when to take one, and how accurate they are.

  3. Pregnancy Test: When To Take, Types & Accuracy - Cleveland Clinic

    Pregnancy tests work by checking your pee or blood for human chorionic gonadotropin (HCG), a hormone your body makes if you’re pregnant. At-home tests are most common.

  4. How to Know How Pregnancy Tests Work: 14 Steps (with Pictures)

    Oct 26, 2025 · Trying to conceive is an exciting time in a person’s life. It can also produce a lot of anxiety as you wait for results, especially if you aren’t sure how pregnancy tests work. Knowing how …

  5. Pregnancy Test Basics | American Pregnancy Association

    Pregnancy tests work best when the pregnancy hormone human chorionic gonadotropin (hCG) has built up in your system. This usually happens around 11 – 12 days after ovulation.

  6. How Do Pregnancy Tests Work? - Caring for Women

    Jul 3, 2025 · Understanding how pregnancy tests work and knowing when to take them can help ensure you get an accurate result. This article breaks down the essential details about pregnancy tests.

  7. How Does a Pregnancy Test Work? | Hope Pregnancy Center

    How Does a Pregnancy Test Work? Pregnancy tests work by detecting the hormone human chorionic gonadotropin (hCG) in urine or blood. However, it takes time for hCG to build to detectable levels, …

  8. How Pregnancy Tests Work | Ava Health

    In this guide, we’ll walk you through how pregnancy tests work, the importance of accurate testing, when and how to test, and what your next steps should be after a positive result.

  9. How Do Pregnancy Tests Work? – MomMed

    In this guide, we’ll break down the science behind pregnancy tests, how to use them effectively, and what your results really mean.

  10. How Do Pregnancy Tests Work? - Wyandotte Pregnancy Clinic

    Mar 4, 2025 · Home pregnancy tests detect the presence of HCG in the urine. Although the body produces HCG at implantation (10 days after conception), HCG may not be detectable in the urine …