Illustration of a woman standing by a window with the moon outside, she is holding a pregnancy test

Can you take a pregnancy test at night?

Written by

Lucy Abrams-Husso

Lucy Abrams-Husso is an artist and academic who has been working as a researcher for nearly 10 years. Her own experience starting a family motivated her to want to work towards providing others with easy-to-understand, factual, and empathetic resources on topics in women's health, particularly fertility, pregnancy, and postpartum. Lucy recently completed her doctorate degree at the Sibelius Academy of the University of the Arts Helsinki and is based in Helsinki, Finland.

Fact checked by

Agathe van Lamsweerde

Agathe van Lamsweerde, holds a Master's in Mathematical Engineering from KU Leuven and EPFL, and works as a Data Scientist at Natural Cycles in Geneva. Her role entails developing in-house algorithms and collaborating with global research teams to challenge stigmas in women’s reproductive health.

, Scientist at Natural Cycles

Follows NC° Editorial Policy

At Natural Cycles, our mission is to empower you with the knowledge you need to take charge of your health. At Cycle Matters, we create fact-checked, expert-written content that tackles these topics in a compassionate and accessible way. Read more...

Last updated:

Jun 17, 2026

5 min read

Key takeaways

Most pregnancy tests can be taken at any time of day, but your urine is the most concentrated in the morning, which makes detecting hCG slightly easier if you are in the earliest stages of pregnancy
If you suspect you are pregnant but a pregnancy test result is negative, it’s advised to wait a few days before testing again
Instructions on taking and reading pregnancy tests can vary from brand to brand, so it’s important to follow the specific instructions on your test kit

If you suspect you’re pregnant, it’s understandable that you want to know what’s going on as soon as possible. In this article, we’re diving deep into one important and frequently asked question: Can you take a pregnancy test at night? Despite what you might have heard or read, you can typically take pregnancy tests at any time of day [1]. There are some early detection tests that recommend testing in the morning, so it’s important to follow the instructions for your specific test. We’re going to cover why it’s sometimes advised to test in the morning, and how to judge the accuracy of an evening test result. We’ll also go over some other frequently asked questions.

Testing for pregnancy at night vs morning

In general, pregnancy tests can be taken at any time of day, but some early detection tests advise testing first thing in the morning. This is tied to how pregnancy tests work and their sensitivity for detecting hormone levels in your urine. [2]

Pregnancy tests detect human Chorionic Gonadotropin (hCG), which your body begins producing after implantation (when the fertilized egg implants in the wall of the uterus). By the time you reach the first day of your missed period, there is typically enough hCG in your urine to be detected throughout the day, meaning that pregnancy tests can be taken at any time [1]. However, if you choose to test before your missed period, it’s good to know that your urine is more concentrated in the morning, before you’ve had anything to drink [2]. So if you’re very early in your pregnancy and eager to find out if you’re pregnant as soon as possible, the morning is when a pregnancy test would be most able to detect a very early pregnancy.

While most home pregnancy tests advise waiting until the first day of your missed period, having irregular periods can make calculating your period a challenge. Using Natural Cycles to confirm your ovulation can help you determine when it’s time to take a pregnancy test. If you don’t know when your next period is due, it’s often advised to wait at least 21 days after you have had unprotected sex to take a pregnancy test [1].

What does a negative pregnancy test at night mean?

A negative pregnancy test can mean that you’re not pregnant, but it can also mean that there wasn’t enough hCG present in your urine yet to return a positive result. If you received a negative test result but you suspect you’re pregnant, it’s best to wait a day or two before taking another test.

Even if you’re experiencing early pregnancy symptoms, it can take time before there is enough hCG in your system to be detectable on a pregnancy test. Be sure to follow the instructions on your test to ensure the most accurate result, as these can differ slightly from brand to brand. [2,3]

How accurate is a pregnancy test at night?

If you have followed the test’s instructions and the test is positive, you can assume the test is accurate. Home pregnancy tests are 99% accurate if used correctly, and false positives are rare [3]. If you received a positive result, no matter what time of day, it’s safe to assume you’re pregnant and you should contact a doctor, nurse, or midwife to schedule your first prenatal appointment.

If you receive a negative test later in the day or at night, but still think you might be pregnant, it’s possible that you took the test too early or your urine was too diluted. Try waiting a few days and take the test in the morning, making sure you’re following the manufacturer’s directions.

Keep in mind that if you take a positive test in the morning and then get a negative result later that same day, it’s likely you are pregnant and that the urine later in the day was too diluted to return a positive result.

Things to keep in mind if you choose to take a pregnancy test at night

If you suspect you’re pregnant, it’s understandable to want to find out as soon as possible. Keep in mind the following to ensure the most accurate results:

Take the test at the correct time in your cycle. If you want to test earlier than the first day of your missed period, try to find an early detection test. Be sure to follow the specific sampling instructions on the test you use.

A negative test doesn’t always mean you’re not pregnant. It could be that you tested too early, or your urine was too diluted if you took the test later in the day. Try to wait a few days before testing again.

Testing in the morning is best for early detection. Before you have anything to drink your urine is more concentrated and earlier detection of hCG is possible. Keep in mind that some test kits also specify that you should test in the morning — always read the instructions.

Testing can be expensive. Try to choose when to test and stick to it, as repeat testing can be expensive and emotionally challenging.

Talk to your healthcare provider for more guidance. If you have any questions about testing, timing, or reading results, it’s important to ask. Also, if you continue to get a negative test result but you’re not getting your period, contact your doctor or midwife.

Know when it’s time to take a pregnancy test

Natural Cycles uses your body temperature and cycle data to predict your fertile window more accurately than other calendar-based methods [4], which means you can better estimate where you are in your cycle. This knowledge is helpful both for timing sex for conception and letting you know the best time to take a pregnancy test. If you’re trying to conceive, research has shown that couples using Natural Cycles to plan a pregnancy conceive around three cycles on average [5]. Whether you want to get pregnant faster or want to try a hormone-free, certified birth control, why not see if Natural Cycles is right for you?

1. Doing a Pregnancy Test [Internet]. nhs.uk. 2026 [Cited 15 Jun 2026]. Available from: https://www.nhs.uk/pregnancy/trying-for-a-baby/doing-a-pregnancy-test/

2. Center for Devices and Radiological Health. Pregnancy [Internet]. U.S. Food And Drug Administration. 2019 [Cited 15 Jun 2026]. Available from: https://www.fda.gov/medical-devices/home-use-tests/pregnancy

3. Pregnancy tests | Office on Women’s Health [Internet]. OASH | Office on Women’s Health. [Cited 15 Jun 2026]. Available from: https://womenshealth.gov/a-z-topics/pregnancy-tests

4. Kleinschmidt TK, Bull JR, Lavorini V, Rowland SP, Pearson JT, Scherwitzl EB, Scherwitzl R, Danielsson KG. Advantages of determining the fertile window with the individualised Natural Cycles algorithm over calendar-based methods. Eur J Contracept Reprod Health Care. 2019 Dec;24(6):457-463. doi: 10.1080/13625187.2019.1682544. Epub 2019 Nov 18. PMID: 31738859.

5. Berglund Scherwitzl E, Lundberg O, Kopp Kallner H, Rowland SP, Holte J, Trussell J, Gemzell Danielsson K, Scherwitzl R. Short- and long-term effect of contraceptive methods on fecundity. Eur J Contracept Reprod Health Care. 2019 Aug;24(4):260-265. doi: 10.1080/13625187.2019.1621999. Epub 2019 Jun 21. PMID: 31223036; PMCID: PMC6689758.

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Frequently asked questions

You can take a pregnancy test at any time of day, but it’s good to know that your urine is the most concentrated in the morning. This makes detecting hCG slightly easier if you are in the earliest stages of pregnancy. Pregnancy tests are most accurate when taken after a missed period. If you have irregular periods, or are having trouble calculating when you should take a test, try counting 36 days from the start of your last period or at least 21 days from when you had unprotected sex [1,3].

If you received a positive result in the morning but it was negative in the evening, it’s possible that your urine was too diluted at the end of the day to give a positive result. If you followed the instructions and your morning test was administered and read correctly, you are most likely pregnant and should contact a nurse, midwife, or doctor to take the next steps.

Any urine pregnancy test can be taken at night, unless the manufacturer’s guidelines instruct otherwise. Taking a pregnancy test too soon after implantation can lead to a negative result, whether you take the test in the morning or the evening. Be sure to read the test instructions carefully, remembering that some tests have been developed to detect hCG earlier, possibly before your missed period, and these may recommend testing with the first urine of the day.

A faint line on a pregnancy test most likely means that you are pregnant. Unlike ovulation tests, which require a line as dark or darker than the control line, faint lines on at-home pregnancy tests usually indicate a positive result [3]. Be sure to follow the manufacturer’s instructions to ensure you are both taking the test and interpreting the results correctly.

If you are taking any medications that have hCG in them, like some medicines for infertility, they can give you a false positive on a home pregnancy test. Most other medications, like hormonal birth control or antibiotics, should not affect home pregnancy test results [3]. If you take a pregnancy test and the result is positive, you should always follow up with a doctor, nurse, or midwife to confirm the pregnancy and discuss next steps.