How Do Pregnancy Tests Work?

When you think you might be pregnant, waiting for answers can feel stressful. A pregnancy test is often the first step in finding clarity, but you may be wondering exactly how they work and when the best time is to take one.

At Vida Medical Clinic, we provide no-cost, lab-quality pregnancy tests in a confidential and supportive environment. If you’re unsure about the results of a test you’ve taken at home, or if you haven’t tested yet, request your appointment today.

What Pregnancy Tests Detect

Pregnancy tests measure a hormone called human chorionic gonadotropin (hCG). Your body begins producing hCG after a fertilized egg attaches to the lining of your uterus. 

The amount of this hormone rises quickly in the early weeks of pregnancy, which is why testing too early can sometimes give you inaccurate results.

When Should You Take a Pregnancy Test?

The best time to take a urine pregnancy test is after you’ve missed your period. At that point, hCG levels are typically high enough to be detected accurately.

If you test too soon, especially before your period is due, you may see a negative result even if you are pregnant. Waiting at least one week after a missed period usually gives the most accurate answer.

Urine vs. Blood Pregnancy Tests

Urine tests are the most common type of pregnancy test and are simple, quick, and highly accurate when taken at the right time. These tests only detect the presence of hCG, not the specific amount of hCG. 

You can purchase them over the counter at most stores, but medical-grade urine tests, such as those offered at Vida Medical Clinic, provide more reliable results in a professional setting.

Blood tests, performed in a medical office or lab, can sometimes detect pregnancy earlier than urine tests and measure the exact level of hCG in your system. While helpful in certain medical situations, most women will not need a blood test for confirmation.

Find Out If You’re Pregnant Today

If you think you might be pregnant, the best next step is to take a lab-quality test and, if positive, verify your pregnancy with a limited obstetric ultrasound. At Vida Medical Clinic, we provide both services at no cost, along with a safe place to ask questions and discuss your options.

Request your appointment today and get the answers and support you deserve.

Vida does not provide or refer for abortions.