What Is the Difference Between a Blood and Urine Pregnancy Test?

Usually, the first sign of pregnancy is a missed period. If you want to verify your pregnancy, start with a pregnancy test. There are two kinds: blood and urine.

The main difference is how early a test indicates pregnancy. Blood tests detect pregnancy much earlier than a urine test. 

How Do The Tests Determine Pregnancy?

Both tests check for the pregnancy hormone called hCG. The production of human chorionic gonadotropin (hCG) begins when a fertilized egg attaches to the wall of the uterus, around 6 days after becoming pregnant.

As hCG builds in a woman’s body, it enters her bloodstream and urine. A blood test can accurately detect hCG as soon as a week after ovulation. Urine pregnancy tests detect hCG later, a day or two after the missed period.

Why Choose A Blood Test?

Not only does a blood test detect hCG earlier, but it also detects the amount of hCG. If a blood test shows the presence of hCG, but the amount is very low, it could indicate an ectopic pregnancy.

An ectopic pregnancy forms outside the uterus and is a dangerous health issue that can be life-threatening. Blood tests can also indicate a potential miscarriage and accurately date the pregnancy.

However, blood pregnancy tests take longer to get results, making them less attractive.  

Are At-Home Urine Tests Accurate?

At-home urine pregnancy tests have become more accurate over the years. It’s essential to take them at the right time and follow the directions carefully. 

The sensitivity of at-home urine tests varies. Some tests detect hCG earlier than others. Once you have taken the test, it’s important to wait for the results to appear. 

Different tests take time, so you should read the instructions carefully to see how long you need to wait. Most urine tests are more accurate early in the morning after urine has accumulated overnight. 

No-Cost Pregnancy Testing

At Life Choices Center, we provide no-cost laboratory-quality pregnancy testing with over 99% accuracy. Our urine pregnancy tests are the same ones used by hospitals and medical clinics, so you can be confident you are getting the best results.
If your test is positive, your next step is to have an ultrasound. An ultrasound is an important tool used to determine how far along the pregnancy is. Our staff will provide a referral for you to receive a no-cost, on-site ultrasound with a physician. Schedule your appointment today.

Life Choices Center does not perform or refer for abortions.