09 Dec What Are the Reasons for a False-Positive or False-Negative Pregnancy Test?
When you’re facing an unexpected pregnancy, taking a pregnancy test can feel nerve-wracking. Whether you see a positive or negative result, it’s natural to wonder how accurate it really is, and what steps you should take next.
At Lighthouse, we provide no-cost, confidential pregnancy testing so you don’t have to navigate this uncertainty alone. If you’re unsure about your test results, schedule an appointment today to get clarity and support.
Understanding why tests sometimes give false readings can help you make sense of your situation and decide what to do next. Keep reading to learn more.
Why False Positives Can Happen
A false-positive result means a test indicates a pregnancy when you are not actually pregnant. This is rare, but it can happen under certain circumstances.
One common cause is an early pregnancy loss, sometimes called a chemical pregnancy. In this situation, a fertilized egg implants briefly and begins producing hCG, but the pregnancy stops developing very early. Even after the pregnancy ends, your body may still have detectable hCG, causing a positive test.
Other factors that might cause a false-positive include fertility medications that contain hCG, certain ovarian conditions, or hormonal shifts connected to menopause. While not common, these situations can make interpreting a test result more confusing.
Why False Negatives Occur
A false-negative test happens when you are actually pregnant, but the test shows a negative result. This is more likely than a false positive and is often linked to timing.
Your body needs time to build up enough hCG for a test to detect. Testing too early, even a day or two before your missed period, can lead to a negative result even if you are pregnant. Testing later in the day or after drinking large amounts of fluids may also dilute the hormone.
User error can also play a role, such as misreading instructions, checking results too soon or too late, or using an expired test, which can all affect accuracy.
It’s best to test first thing in the morning, when your urine is most concentrated, and take the test one to two days after a missed period to ensure a more accurate result. If your period is late or your symptoms continue, retesting after a few days or visiting Lighthouse for lab-quality testing is an essential next step.
Why Follow-Up Matters
Home tests can be helpful, but they can’t confirm the pregnancy. That’s why, after a positive test result, it’s important to receive an ultrasound to confirm the pregnancy.
An ultrasound can clarify whether the pregnancy is progressing, how far along you may be, and whether the pregnancy is located in the uterus. These details are crucial for understanding your health and the options available to you.
You deserve clear information and compassionate care during uncertain moments. Lighthouse offers no-cost, confidential pregnancy testing and ultrasounds so you can move forward with confidence and support.
Schedule your appointment today to get the clarity you need. We’re here for you every step of the way.