Is your period due? If you're expecting a baby, this can be an exciting and a bit scary time. Or, if you're not ready for a baby yet, it can be a bit scary. Whatever the reason, the easiest, quickest and most reliable way to know for sure if you're pregnant is to take a pregnancy test. So today, let's talk about everything in a very simple way.
What really happens in a pregnancy test?
Simply put, a pregnancy test is a test that checks whether you are pregnant or not. It checks for a special hormone that your body produces when you are pregnant. This hormone is called Human Chorionic Gonadotropin . We call it HCG for short.
Now you may be wondering where this HCG hormone comes from. When you get pregnant, after the fertilized egg implants in the wall of your uterus, the placenta begins to develop to help the baby grow. That placenta is where this HCG hormone is produced. During the first few weeks of pregnancy, this HCG level increases very rapidly, doubling every two to three days. So, a pregnancy test looks for this HCG hormone in your urine or blood.
If the result is 'positive', it means you are pregnant. If it is 'negative', it means you are not pregnant.
There are two main types of pregnancy tests:
1. Urine Tests: This is the test we all know, and can be done at home. You can easily get it from a pharmacy or supermarket.
2. Blood Tests: This will need to be done through your doctor at a hospital or lab.
What is the best time to take the test?
This is the biggest problem that many people have. In order to know the result quickly, some people test even before the expected day of menstruation. But if you do that, there is a high chance that the test result will come out 'Negative' even if you are actually pregnant.
To get the best and most accurate results , it is best to take the test at least a day or two after your expected period.
The reason is that the HCG hormone we talked about earlier takes a few days to reach detectable levels in urine. It usually takes about 10 days after fertilization for some sensitive tests to detect it. However, if you wait until after your period, the HCG level will have increased significantly, so the result will be very clear and accurate.
What time of day should I take the test?
There is also a best time for this. If possible, take the test first thing in the morning (first morning pee). This is because the HCG hormone is very concentrated in urine that has been in the bladder all night, meaning it is more intense. Therefore, the chances of getting a positive result are higher.
If you can't do it in the morning, you can do it at any other time of the day. However, if you do, it's best to wait at least three hours before taking the test. Also, don't drink a lot of water before taking the test and try to urinate. Doing so can dilute the urine and lower the HCG level.
The two types of tests - what are the advantages and disadvantages?
Let's now see what are the differences between a home urine test and a blood test done by a doctor. The table below will help you.
| Feature | At-home Urine Test | Blood test by a doctor |
|---|---|---|
| Where to do it | You can do it at home, in person. | Only in a hospital, clinic, or laboratory. |
| What is recognized | It just checks whether the HCG hormone is present in the urine or not . | You can find out if the HCG hormone is present in the blood and how much is present. |
| How soon can you find out? | It is most accurate after the menstrual period has passed (10-14 days after fertilization). | Can be detected earlier than urine test (7-10 days after fertilization) |
| Accuracy | It is about 99% accurate if the instructions are followed exactly. | More than 99% accurate. |
| Advantages | It's cheap, easy to get, quick results (in a few minutes), and private. | Pregnancy can be detected at a very early stage. The HCG level can be accurately determined. |
| Disadvantages | If you test too soon, you may get a false negative result. You won't be able to tell the HCG level. | It's expensive, inconvenient, and it can take a few hours or a couple of days to get results. |
Generally, unless there is a specific medical reason (for example, if you are undergoing fertility treatment or are at risk of miscarriage), a home urine test is sufficient.
Remember these things to get the most accurate results
Even though a home test is said to be 99% accurate, it depends on how well you do it. So keep these points in mind.
- Check the Expiration Date: Be sure to check the expiration date of the test kit before purchasing and using it.
- Read the instructions carefully: Not all tests are the same. Some require you to apply a few drops of urine to the test strip. Others require you to hold the test strip in your urine stream. So read the instructions carefully before using it.
- Check the result at the right time: The instructions will tell you how many minutes to check the result (usually 3-5 minutes). Check it at that time. If you check too soon, the result may not come. If you wait too long, you may get an incorrect result.
- Be aware of the 'Evaporation Line': Sometimes, after a long period of time (more than 10 minutes) after the test, a very faint, colorless line may appear when the urine has dried. This is called an 'evaporation line'. This is not a 'positive' result. Therefore, it is very important to read the result within the specified time.
How to understand the result?
Most tests have two windows. One is the Control Window. If a line appears in this window, it means the test is working properly. The other is the Result Window.
- Positive: If, along with the line in the control window, a line appears in the result window (two lines), or if a plus sign (+) appears, it is positive.
- Negative: If a line appears only in the control window, but no line appears in the result window, it is negative.
- Invalid: If no line appears in the control window, the test is invalid. A new one should be used.
Frequently asked questions about results
Is it positive if there is a faint line?
This is something that many people ask. Yes! If you see a very faint, barely visible second line along with the control line, it is most likely a 'positive' result . This is because your HCG level is still a little low. If you are in doubt, test again in two or three days with your morning urine. The line should be even clearer then.
Is it possible to get a 'false negative' result?
Yes, it can happen. That means you are pregnant, but the test shows that you are negative. The main reason for this is that you took the test too soon . The hCG level is not high enough for the test to pick it up. So if you get a negative result but your period hasn't arrived yet, try taking the test again in about a week.
Is it possible to get a 'false positive' result?
This is a very rare occurrence. It means that the test comes out 'positive' even though you are not pregnant. There can be several reasons for this:
- If you are receiving injections containing HCG as a fertility treatment.
- If the pregnancy is lost (miscarriage or chemical pregnancy).
- Very rarely, due to certain medical conditions.
If you have any doubts about a 'positive' result, the best thing to do is see your doctor.
What happens next if the test is 'positive'?
If your home pregnancy test confirms that you are pregnant, congratulations! There are some important things you need to do next.
1. See a doctor immediately: Call your family doctor or a gynecologist and make an appointment. It is very important to confirm the pregnancy and get the necessary advice.
2. Start taking prenatal vitamins: As per your doctor's advice, start taking prenatal vitamins that contain folic acid. Folic acid is essential for the healthy development of your baby's nervous system.
3. Adopt a healthy lifestyle: If you smoke, stop immediately. Avoid alcohol completely. Limit the amount of caffeine (tea, coffee) you consume daily. Try to eat a balanced diet.
Does the test show an ectopic pregnancy?
Yes. Even in an ectopic pregnancy, the body produces the hormone HCG, which is why a pregnancy test will be 'positive'. An ectopic pregnancy is when a fertilized egg implants outside the uterus, usually in a fallopian tube. This is a serious condition, so if you have symptoms such as severe lower abdominal pain or unusual bleeding, you should seek medical advice immediately.
Take-Home Message
- For the most accurate result, wait until after your period has ended before taking the test.
- If possible, use the first urine sample from the morning.
- Read the instructions in the test kit carefully and follow them exactly.
- A 'positive' result is usually very reliable. If the result is positive, see your doctor for next steps.
- If the result is 'negative' and your period has not yet started, check again in a few days or seek medical advice.
- If you have any concerns about your results or your pregnancy, the best thing to do is talk to your doctor.
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