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Contact your healthcare provider if you have questions about the results of your pregnancy test. These blood tests are slightly more sensitive than urine tests because they can detect very small levels of HCG. That means they can provide a more accurate answer very early on in pregnancy — within seven to 10 days after conception. For this test, your blood sample is taken at your provider’s office or the hospital, then sent to a lab for analysis. Results might take anywhere from a few hours to two days.
The company says the test is 99% accurate at detecting pregnancy from the day of a woman’s expected period, and about 93% accurate in estimating the number of weeks. At-home urine pregnancy tests can yield false negatives due to varied concentrations of hCG present in urine. Labcorp’s quantitative test detects the exact amount of hCG in blood with exact levels that can be measured over time compared to a positive or negative urine test result. If you believe the tests are indicating a false negative and that you’re pregnant, you should consult your doctor. They can conduct an hCG blood test, which is more sensitive to lower levels of the hCG hormone than the hCG urine test. HCG blood tests can detect pregnancy about 10 days after conception, while urine tests generally take 2 or more weeks.
How will my pregnancy blood test results be displayed?
However, there is the risk of receiving a false positive or false negative result. The main factor that can impact the results of your pregnancy test is timing. This is because they either have irregular periods, or they calculate their estimated period date incorrectly. The main benefit of blood testing for hCG is that you will be able to receive your numeric hCG level, which is not possible with typical at-home urine tests. This information is particularly useful for women who have experienced a miscarriage or miscarriages in the past, or for those currently undergoing fertility treatment. In addition to urine testing, your doctor can also use a blood test to measure the amount of hCG in your body.
Other kits require that you collect urine in a cup and then dip the indicator stick into the cup to measure the hCG hormone level. During the first 8 to 10 weeks of pregnancy, hCG levels normally increase very rapidly. These levels reach their peak at about the 10th week of pregnancy, and then they gradually decline until delivery.
Normal hCG levels
Urine tests are typically done at home — though you can have a urine test done at your healthcare provider’s office — while your provider performs a blood test. Pregnancy tests work by reacting to the amount of HCG in either your pee or blood. In a urine test, a piece of reactive paper detects the HCG. This test might show a plus sign, double vertical lines or even the word “pregnant.” Different tests will show a positive result in unique ways.
Pregnancy tests look for a special hormone —human chorionic gonadotropin — that only develops in a person’s body during pregnancy. These tests can use either your pee or blood to look for HCG. At-home pregnancy tests that use your pee are the most common type. When used correctly, home pregnancy tests are 99% accurate. HCG is a pregnancy hormone produced by the placenta when a fertilised egg implants in the uterine wall. The hormone hCG starts to be produced around six days after fertilisation and can usually be detected 10 days after a missed menstrual period.
from a Pregnancy Blood Test?
Also learn how doctors may monitor someone’s condition for changes after they’ve contracted HIV. Every person is different, but here are a few top signs. You can take an hCG urine test at your doctor’s office or at home with a home pregnancy test. Discuss any medications you’re taking with your pharmacist or doctor to see if they could affect the results of an hCG urine test. There are no special preparations necessary to take an hCG urine test.
Most likely, there’s no cause for concern, but your healthcare provider will help you understand what these levels mean. Pregnancy tests measure levels of a specific pregnancy hormone. Find out how pregnancy tests work, when to take one, and how accurate they are. Most people first learn about a pregnancy through a home HCG pregnancy test, and many confirm that the pregnancy is healthy with blood HCG testing.
Your doctor may also use a blood test to see if you are pregnant. Finally, your doctor may have more information about you from your history, physical exam, and other tests that may give a more reliable result. Healthline has strict sourcing guidelines and relies on peer-reviewed studies, academic research institutions, and medical associations. For some home pregnancy tests, you’ll hold an indicator stick directly in your urine stream until it’s soaked, which should take about 5 seconds.
Keep in mind that, if you want your hCG blood test results explained in more detail, your healthcare provider is the best person to ask. If your home pregnancy test is positive, your healthcare provider may offer a blood test to check your hCG levels. The results can help your provider confirm your pregnancy and determine how far along you are.
It's usually accompanied by symptoms such as pelvic pain and vaginal spotting. If your hCG levels don't go up during early pregnancy or if they start to decline, this could signal you've had or are about to have a miscarriage. If this is the case, you may experience other signs of miscarriage, such as bleeding and abdominal pain. It’s not common for doctors to routinely check your hCG levels unless you are showing signs of a potential problem. A qualitative test detects if hCG is present in the blood. A quantitative test measures the amount of hCG actually present in the blood.
This not only supports the growth of the uterus and uterine lining, but it also helps to prevent early contractions. If you’ve ever taken an over-the-counter pregnancy test before, you have tested for the presence of hCG in your urine. That’s because once implantation occurs, hCG is produced at a rapid rate – making it the key hormone used to detect early pregnancy. After an egg is fertilized and implants in the uterus, the cells that will eventually form the placenta start making hCG.
You could be trying to get pregnant and hoping for a positive result. You might have experienced an issue with your birth control. You might even be about to have a medical procedure or start a new medication that could be complicated by pregnancy. No matter what the reason, if you ever have any questions about your test results, the best thing to do is reach out to your healthcare provider.
Paper strip tests and some plastic tests will display your results as either a single line or as two lines . For plastic tests with a digital display, you may also receive your results displayed as either a “yes or no” answer or as the words “pregnant or not pregnant”. BabyCenter is committed to providing the most helpful and trustworthy pregnancy and parenting information in the world.
Are there any medications that can change the result of my pregnancy test?
This test measures the amount of hCG in your blood to give you a positive or negative pregnancy result. If you receive a false negative result, this means the test will say that you are not pregnant even though you are. In this case, a pregnancy may be at risk if you do not take the appropriate care and caution in early pregnancy.
Some people get positive tests very early in pregnancy and then experience a pregnancy loss a few days later. Implantation usually happens a week or so after ovulation. It can take several days for HCG levels to rise high enough for a test to detect the hormone. The earlier a person takes the home pregnancy test, the more difficult it is to detect this hormone.
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