What Pregnancy Test Tells You How Many Weeks

What Does a Pregnancy Test Tell You About How Many Weeks Along You Are?

Pregnancy tests are a great way to confirm if you are pregnant, but they don’t typically tell you how many weeks along you may be. In fact, most pregnancy tests can’t even detect the hormone, hCG (human Chorionic gonadotropin), which is an indication of a viable pregnancy, until you’re about six weeks along.

Types of Pregnancy Tests

Pregnancy tests range from drugstore bought home tests, to more advanced and accurate medical tests administered in a doctor’s office.

  • Home Tests: Home tests detect the presence of the hCG hormone in your urine. These tests are typically over-the-counter, inexpensive, and easy to use. Urine tests may be used up to the first day of your missed period.
  • Blood Tests: Blood tests can detect hCG earlier than home tests; about 10 days after ovulation. A blood pregnancy test can also calculate the exact amount of hCG in your body, which gives an indication of how far along you may be.

Determining How Many Weeks You’re Pregnant

It is possible to calculate how far along you are in your pregnancy by using home or blood tests. This can be done using a process called “dating ultrasound”.

  • First, your doctor will use a urine or blood test to determine your hCG levels, which can indicate how far along your pregnancy is.
  • Next, they will use an ultrasound to determine the size of the fetus. The size of the fetus can provide an indication of the approximate gestation.
  • Finally, your doctor may use gestational sac size as a final measure of your pregnancy to calculate an estimated due date.


Pregnancy tests can be a great way to confirm a pregnancy, but keep in mind that they do not provide accurate information about how many weeks along you may be. To get a more accurate estimation of how far along you might be, make an appointment with your doctor for more advanced testing.

What a Pregnancy Test Tells You About How Many Weeks Along You Are

Pregnancy tests are an important tool to help determine if and when you are pregnant. But what exactly do they tell you and specifically, how many weeks along you are? Here’s a breakdown of what to expect:

What Does a Positive Pregnancy Test Mean?

When you get a positive result on a home pregnancy test, it means that you are indeed pregnant and the test has detected the presence of the hormone, human chorionic gonadotropin (hCG).

What Can a Pregnancy Test Tell You About How Far Along You Are?

A home pregnancy test can give you an indication of whether you are pregnant, but it can’t tell you how far along you are. Most home pregnancy tests only typically detect the presence of the pregnancy hormone, hCG, if you are approximately six weeks pregnant.

What if the Test is Negative?

If your test is negative and you don’t get your period within a few days, it’s a good idea to take another test.

What Tests Tell You How Far Along You Are?

To determine how many weeks pregnant you are based on hCG levels, your doctor may order one or more blood tests. The results of the blood test are used to calculate the number of weeks pregnant you are. Your doctor may also conduct other tests, such as an ultrasound, to get an accurate measure of how far along you are in your pregnancy.


While a home pregnancy test can tell you if you are pregnant or not, it cannot tell you how far along in your pregnancy you are. This is normally determined by blood tests and/or ultrasounds. Your doctor has the best expertise in this areas and can provide you with the most accurate information.

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