Will Pregnancy Test Work with IUD: Accurate Results Explained

When you’re using an intrauterine device (IUD) as your choice of birth control, you might wonder whether a pregnancy test would still work if you had concerns about a possible pregnancy. IUDs are highly effective in preventing pregnancies with more than 99% success rate, but rare instances do happen where women become pregnant while utilizing an IUD. It’s important to understand the different types of IUDs available, like hormonal IUDs (e.g. Mirena) and copper IUDs (e.g. ParaGard), each functioning slightly differently in preventing pregnancy. Regardless of the type of IUD you’re using, it’s crucial to know how a pregnancy test would work if you suspect you’re experiencing pregnancy symptoms. A pregnancy test detects the presence of the hormone human chorionic gonadotropin (hCG) in your body, which is only produced when you’re pregnant. This means that whether or not you have an IUD in place, a pregnancy test should still provide accurate results if you follow the instructions carefully, as it’s detecting the hormone, not the presence of an IUD. If you get a positive result, it’s essential to contact your healthcare provider immediately for further evaluation and guidance, considering the increased risks associated with pregnancy with an IUD in place.

IUD and Pregnancy: Basic Understanding

What is an IUD?

An IUD, or intrauterine device, is a small T-shaped device that is placed inside your uterus by a healthcare provider. It serves as a long-term, reversible birth control method. There are two types of IUDs available: hormonal IUDs, such as Mirena, and copper IUDs, such as Paragard. Both types are highly effective in preventing pregnancy, with a success rate of over 99%.

Functioning of an IUD

The way an IUD functions depends on the type of IUD you have. Hormonal IUDs release a small amount of the hormone progestin into your uterus. This hormone has several effects, such as thickening the mucus in your cervix to prevent sperm from reaching an egg, which ultimately stops fertilization. Progestin also thins the lining of your uterus, making it less receptive for a fertilized egg to implant, should fertilization still occur. Copper IUDs, on the other hand, don’t release hormones. Instead, they release a small amount of copper into your uterus, which acts as a spermicide. The presence of copper creates an inhospitable environment for sperm, preventing them from reaching an egg, and thus stopping fertilization. The effectiveness of IUDs ensures that the chances of becoming pregnant while using one are quite low. In rare cases, it is possible to become pregnant with an IUD – roughly 1 in every 5,000 people using an IUD may experience an unwanted pregnancy, according to Verywell Health. If you suspect you may be pregnant while using an IUD, it’s essential to consult your healthcare provider promptly for guidance, as there can be potential risks and complications involved.

Will Pregnancy Test Work With IUD?

If you’re using an IUD and suspect you may be pregnant, you might wonder whether a pregnancy test will still accurately provide results. Indeed, pregnancy tests can still work with an IUD.

Factors Affecting Accuracy

While IUDs are more than 99% effective in preventing pregnancy, it’s still possible, though rare, to get pregnant while using one. Pregnancy tests usually detect the hormone human chorionic gonadotropin (hCG), which increases in your body when you’re pregnant. An IUD doesn’t affect hCG levels and thus, won’t interfere with a pregnancy test’s accuracy. However, it’s important to consider factors that can affect the accuracy of a pregnancy test:
  • Testing too early: Taking the test too soon after a missed period might not allow your body to produce enough hCG yet.
  • Expired or defective test: Check the expiration date on your test and ensure it’s properly stored before use.
  • Reading the results too soon or too late: Carefully follow the test’s instructions when it comes to reading the results within the indicated time frame.

How to Detect Pregnancy Even With IUD

If you’re using an IUD and suspect you’re pregnant, follow these steps to confirm:
  1. Take a home pregnancy test: If your period is late or you’re experiencing pregnancy symptoms like breast tenderness, nausea, or fatigue, take a home pregnancy test. These tests are accurate in detecting pregnancy even if you have an IUD.
  2. Visit your healthcare provider: If the home pregnancy test returns a positive result or you’re still unsure, schedule an appointment with your healthcare provider. They can confirm the pregnancy with a blood test, which is more accurate than a home test.
  3. Discuss options with your doctor: If you’re pregnant and have an IUD, discuss the potential risks and options with your healthcare provider, as the IUD may have to be removed. Your doctor will guide you through the process and help you make the best decision for your health.
Following these steps while keeping in mind the factors that can affect pregnancy test accuracy will ensure that you get the most accurate results, even with an IUD in place.

Possible IUD Complications

Ectopic Pregnancy

While it is rare to get pregnant with an IUD, the risk of ectopic pregnancy is higher in case of a pregnancy. An ectopic pregnancy is when the fertilized egg implants itself outside the uterus, often in the fallopian tube. This type of pregnancy is dangerous for you and cannot result in a viable pregnancy. If you experience abdominal pain, unusual vaginal bleeding, or shoulder pain, it is crucial to visit your healthcare provider immediately.

Failed IUD

Although IUDs are more than 99% effective in preventing pregnancy, there is still a small chance of device failure. If you suspect your IUD might not be effective or if you have concerns about your pregnancy test results, visit your doctor for further evaluation. Healthline provides more information about the rare possibility of getting pregnant with an IUD.

Proper Measures

If you find out you are pregnant while using an IUD, it is crucial to consult your healthcare professional immediately. Removal of the IUD is often necessary, as leaving it in place can result in increased risks of miscarriage, preterm birth, and infection of the amniotic sac and fluid before delivery. Follow your doctor’s advice and recommendations to ensure the best possible outcome for you and your pregnancy.

Can Rosemary Water During Pregnancy Affect the Accuracy of an IUD Pregnancy Test?

There are no significant rosemary water safety concerns related to the accuracy of an IUD pregnancy test. Rosemary water is safe to consume in moderation during pregnancy, but it’s always best to consult with a healthcare professional before introducing any new substance into your routine.

When to See a Doctor

If you suspect that you might be pregnant while using an IUD, it is essential to consult your doctor immediately. There are several signs you should be aware of that could indicate a possibility of pregnancy. These include a positive result on a pregnancy test, missed periods, or symptoms such as fatigue, nausea, and breast tenderness. Your doctor can help confirm the pregnancy and assess the potential risks associated with having an IUD during pregnancy. It is crucial to seek medical advice as soon as possible since being pregnant with an IUD can be life-threatening, and may require immediate attention. Moreover, your doctor may perform a thorough examination, including an ultrasound or other imaging tests, to determine the correct position of the IUD, and ensure it is not causing any complications. In some cases, they may attempt to remove the IUD, although this should only be done by a healthcare professional to minimize the risk of injury or infection. In the event of an ectopic pregnancy (where the fertilized egg attaches itself outside the uterus), immediate medical attention is required. Ectopic pregnancies can be life-threatening and are more common among women who conceive while using an IUD.


In the unlikely event that you become pregnant with an IUD, rest assured that pregnancy tests will still work accurately. IUD or not, pregnancy tests detect the presence of the hormone hCG in your urine, which is produced by the placenta after a fertilized egg implants. However, it is essential to be aware of the possibility of an ectopic pregnancy if you do become pregnant while using an IUD. If you get a positive result, seek immediate medical attention to address this potential risk. In conclusion, using an IUD does not affect the accuracy of pregnancy tests. Should you have any concerns or experience unusual symptoms, it is always advisable to reach out to a healthcare professional for guidance and support.

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