How long does it take first response pregnancy test

If you have missed a period and recently had unprotected sex, you may be pregnant. Pregnancy tests are most reliable from the first day of your missed period.

When you can do a pregnancy test

You can carry out most pregnancy tests from the first day of a missed period. If you don't know when your next period is due, do the test at least 21 days after you last had unprotected sex.

Some very sensitive pregnancy tests can be used even before you miss a period.

You can do a pregnancy test on a sample of urine collected at any time of the day. It doesn't have to be in the morning.

Where you can get a pregnancy test

You can buy pregnancy testing kits from pharmacists and some supermarkets. They can give a quick result and you can do the test in private.

The following places provide free pregnancy tests:

  • sexual health services
  • some young people's services – call the national sexual health helpline on 0300 123 7123 for details
  • Brook centres for under-25s – find your nearest Brook centre

You may also be able to get a pregnancy test free of charge from your GP.

How does a pregnancy test work?

All pregnancy tests detect the hormone human chorionic gonadotrophin (hCG), which starts to be produced around 6 days after fertilisation.

Most pregnancy tests come in a box that contains 1 or 2 long sticks. You pee on the stick and the result appears on the stick after a few minutes. All tests are slightly different, so always check the instructions.

Pregnancy test results

Home pregnancy tests are accurate as long as you follow the instructions correctly.

A positive test result is almost certainly correct. However, a negative test result is less reliable.

The result may not be reliable if you:

  • do not follow the instructions properly
  • take the test too early

Some medicines can also affect the results.

If you get a negative result and still think you're pregnant, wait a few days and try again. Speak to your GP if you get a negative result after a second test but your period has not arrived.

Continuing with the pregnancy

If you're pregnant and want to continue with the pregnancy, contact your GP or a midwife to start your antenatal care. You can use the pregnancy due date calculator to work out when your baby is due.

If you're not sure you want to be pregnant

If you're not sure about continuing with the pregnancy, you can discuss this confidentially with a healthcare professional. Your options are:

  • continuing with the pregnancy and keeping the baby
  • having an abortion
  • continuing with the pregnancy and having the baby adopted

As well as a GP or a nurse at your GP surgery, you can also get accurate, confidential information – from the age of 13 – from the following:

  • sexual health services
  • the MSI Reproductive Choices website
  • the British Pregnancy Advisory service website
  • the National Unplanned Pregnancy Advisory service website

All these services – including community contraceptive clinics – are confidential. If you're 13 or older, the staff won't tell your parents. They'll encourage you to talk to your parents, but they won't force you. 

If you're under 25 and would prefer advice specifically for young people, the sexual health charity Brook provides a range of services for young people. The Brook website contains information on pregnancy choices. You can also use the Ask Brook 24/7 service.

Video: Is the pregnancy test accurate?

In this video, a midwife explains when you can take a pregnancy test and how to do it properly.

Media last reviewed: 5 February 2020
Media review due: 5 February 2023

For many people, the decision of when to take a pregnancy test can be a major source of anxiety. Sometimes the stress is because you want to be pregnant. Sometimes it’s because you don’t want to be.

Regardless of whether you’re hoping for a negative or a positive result, taking an early test may seem like a good way to find out if you’re pregnant right away. Unfortunately, early testing may give you a negative result, even if you are pregnant.

It's important to take the test at the right time to maximize your chance of getting an accurate reading. Learn the best time to take a pregnancy test in order to get the most accurate result, as well as the risks associated with testing too early.

The Best Time in Your Cycle to Take a Pregnancy Test

The best time to take a pregnancy test is after your period is late. This will help you avoid false negatives. The earliest you should test is one day after you expected your period to start. Keep in mind that the earlier you test, the more likely you are to get a false negative, even if you are pregnant. If you're not already keeping a fertility calendar, proper pregnancy test timing is a good reason to start one.

If your cycles are irregular or you don’t chart your cycles, do not take a test until you have passed the longest menstrual cycle you usually have. For example, if your cycles range from 30 to 36 days, the best time to take a test would be day 37 or later.

Something else to consider is whether you know if your period is even late. According to the FDA, out of every 100 people, between 10 and 20 will not get a positive pregnancy test result on the day they think is just after their missed period, even if they are pregnant.

Tests labeled for early pregnancy detection may be able to detect a pregnancy several days before your expected period. However, the most accurate results come after your period is late.

The time of day you take a pregnancy test does matter to a certain extent. You’re more likely to get an accurate result if you take the test in the morning. This is especially true if your period is not yet late, or if your period is only a couple days late.

At-home pregnancy tests work by detecting the hormone human chorionic gonadotropin (hCG) in your urine. Unless you get up in the night to pee often (or you drink water throughout the night), your urine is more concentrated when you first wake up. This usually means that the amount of hCG is a bit higher, and you’re more likely to get a positive result if you’re pregnant.

However, you can still take a pregnancy test in the middle of the day, or even at night. You’re just more likely to get a false negative, especially if your period isn’t that late, and especially if you’ve been drinking a lot of water and your urine is diluted.

Taking a Pregnancy Test Because of Symptoms

You may decide to take a pregnancy test because you are having early pregnancy symptoms. But keep in mind, the same hormones that cause pregnancy-like symptoms are present every month between ovulation and your period. Many symptoms similar to pregnancy symptoms can have other causes, like a cold, the flu, or even a few nights of poor sleep.

Early Signs of Pregnancy

  • Breast tenderness
  • Frequent urination
  • Mild cramps (sometimes called “implantation cramps”)
  • Very light spotting (sometimes called “implantation spotting”)
  • Fatigue
  • Sensitivity to smells
  • Food cravings or aversions
  • Metallic taste
  • Headaches
  • Mood swings
  • Slight morning nausea

Depending on whether a positive pregnancy test would be good or bad news, symptoms like these may fill you with dread—or excitement. But here’s the good (or bad) news: pregnancy symptoms do not mean you are pregnant. In fact, you can feel pregnant and not be pregnant, or not feel pregnant when you really are expecting.

How Do Pregnancy Tests Work?

Knowing how pregnancy tests work can help you understand when to take them. Pregnancy tests relay how urine reacts with a piece of paper that can detect the presence of hCG. Results are usually shown as a single or double line or a plus or minus sign.

An at-home pregnancy test can't measure the exact amount of pregnancy hormone in your urine. What it can do is detect whether a minimum amount is present.

Getting a negative pregnancy test result doesn't mean your urine doesn't contain the pregnancy hormone (hCG). It just means it doesn't contain enough to trigger a positive result.

"Early results" pregnancy tests promise results as soon as three to six days before your missed period. These tests are more sensitive than standard tests but getting accurate results that early is more difficult simply because ovulation and implantation times can vary. If you have irregular periods, it can be even more difficult to know when might be an accurate time to try an early test.

If you're having fertility treatments, be aware that this may result in a false positive pregnancy test, especially those performed early. That's because pregnancy tests may detect the remains of fertility medications like Ovidrel, Pregnyl, or Novarel.

How Accurate Are Pregnancy Tests?

If you read the instructions carefully, most tests promise 99% accuracy on the day of your missed period—but not for early results. If you expect your period on Wednesday, Thursday would be the day of your missed period. Tests tend to be more accurate after your missed period. Likewise, first morning urine may be more concentrated and detect hCG more accurately.

Variables Affecting Accuracy

Keep in mind that the test's accuracy can depend on several variables. These include:

  • When in your cycle you take the test
  • The timing of ovulation
  • How closely you follow the directions
  • The time of day you test

Efficacy of Early Testing

If you are considering taking a test before your period is late, it is important to consider the pros and cons before you do. Not only could it be expensive to take pregnancy tests too early, but it also could give you inaccurate results. medications

Pro

  • Chance of getting a positive result

  • If positive, relieves some of the stress during the two-week wait

  • Useful if you need to start or stop medications or other early interventions

  • Allows you to begin lifestyle adjustments right away

Con

  • Higher chance of a false negative result

  • Feelings of disappointment with negative result

  • Expense

  • Not accurate with hCG trigger shots such as Ovidrel

The Best Early Test

If you still want to take an early test, despite the possible downsides, you may want to consider a test with a proven track record. According to research, the First Response Early Result (FRER) manual test is the best early pregnancy test on the market now.

The digital test, First Response Gold Digital Pregnancy Test, had previously been reported as less accurate. However, according to a 2013 FDA comparison between the two, the results show the same accuracy.

This pregnancy test has clearance from the FDA to say it can detect pregnancy hormones 6 days before your missed period. That is 5 days before your period is due. There are plenty of other early pregnancy tests on the market. Which one is right for you may depend on factors like cost, result speed, and whether you prefer digital or paper tests.

When to Get a Blood Pregnancy Test

You might be wondering if you should also have a blood test to check if you are pregnant. Your doctor may order a test, or you may be thinking about ordering one yourself. Many labs now allow people to order and pay out of pocket for their blood work.

Before you do that, there are a few things you should know. First, there are two types of pregnancy blood tests: qualitative and quantitative.

  • Qualitative tests measure whether hCG is present in your blood or urine. They pretty much give a yes or no answer as to whether you’re pregnant. Or, more accurately, whether you have enough pregnancy hormone to get a positive result. Home pregnancy tests are qualitative.
  • Quantitative pregnancy tests measure the amount of pregnancy hormone in your blood. This is sometimes called a beta hCG test. These are usually done to see how a pregnancy is progressing. For example, your doctor may order two beta hCG tests a few days apart to see whether the level of hCG is increasing as expected or not. This might be important if you had trouble conceiving, have a history of early miscarriage, or an ectopic pregnancy is suspected.

Blood Test Result Timetable

Blood tests are able to detect a smaller amount of hCG and they can detect it slightly earlier than standard at-home pregnancy tests, usually nine to 12 days after conception. Blood test results are usually available the same day or within a day.

Blood tests aren't often done to detect pregnancy because they are expensive and at-home urine tests are quite accurate and sensitive. However, people who are undergoing fertility treatments may have blood tests as part of their care.

When a Blood Test Is Used

If your period is late by several days, and you’re still getting negative at-home pregnancy tests, a blood test may be recommended. While rare, it is possible to get a negative test result on an at-home test but still be pregnant. If this is your situation, call your doctor, and don’t just order a test on your own. There are other reasons besides pregnancy that your period may be late.  

You don’t necessarily need a blood test to confirm a positive at-home pregnancy test. If the at-home test said you’re pregnant, you’re likely pregnant. That said, your doctor might still order one, especially if you request it.

A Word From Verywell

The best time to take a pregnancy test is the day after your expected period and in the morning hours, with your first urine of the day. However, when you're anxious to see results, it's understandable if you are tempted to test earlier.

Before you reach for that early pregnancy test, carefully consider how you'll feel if the results are negative. If a negative test doesn't bother you, and you have the cash to spend on pregnancy tests, go ahead. If a negative result is going to make your heart ache or if you’d rather not waste money on extra tests, then wait until your period is late.