You are able to use the First Response Pregnancy test six days before a missed period (five days before day of expected period). Price Kecia Gaither, MD, MPH, who is double board-certified in OB/GYN and maternal fetal medicine, and is the Director of Perinatal Services/Maternal Fetal Medicine at NYC Health + Hospitals/Lincoln in the Bronx

The Clearblue positive is a Plus sign(+), this further plays down the chances of getting a false result.We know just how important it is to be able to trust the brands you are using for such a key moment in your life. For that reason, we thoroughly researched and vetted the brands and pregnancy tests included in this round up to ensure they were well-regarded by medical professionals, with many of these tests being recommended and rated by doctors and family planning clinics. In most cases, medics agree that whilst they may vary in sensitivity levels, home pregnancy tests are generally an accurate way to detect pregnancy, so long as they are used correctly. How early can you use it? - The most sensitive pregnancy tests such as First Response Early Result Pregnancy Test can detect 10mIU/ml and some of these can be used before your period is due. It's worth noting, however, that the NHS recommends taking a pregnancy test from the first day of a missed period or at least 21 days after having unprotected sex. If the goal is to detect it as early as you can, then I would urge them to get more than one test,” says Jenifer Fahey, aa certified nurse-midwife at the University of Maryland Medical Center and assistant professor in the department of obstetrics, gynecology, and reproductive sciences at the University of Maryland School of Medicine. If you’re going to test early, she said, you should be prepared to try multiple times. Cost

Pregnancy tests are designed to identify hCG, either in blood or urine, according to the U.S. Food and Drug Administration (FDA). Once the fertilized egg implants in the uterus, your body begins producing hCG. A blood test can tell if hCG is present and the amount. This pregnancy hormone is also passed in your urine, making home pregnancy tests an excellent alternative to in-office blood tests. But, home tests are not as sensitive as a blood test and require waiting to test. The First Response Early Result In-Stream Pregnancy Test is simple to use and is 99% accurate at predicting a pregnancy. The First Response test is also great value for money, which is helpful when you are trying to conceive. When can I use it? Can one find out how long she has been pregnant using a home pregnancy test? Is there a pregnancy week or progression home pregnancy test? That said, there are important things you should be looking at when trying to ID the best pregnancy tests, besides the brand. As with anything at the pharmacy, make sure that the box is sealed and that the test has not expired. Ease of use

Types of pregnancy tests

Both our experts agree that First Response Early Results is one of the most sensitive home pregnancy tests available with the ability to accurately test levels of hCG five days before your expected period. A single horizontal line in the test zone in the case of Early Pregnancy Test or Crossed symbol (plus sign) in Clearblue Rapid Detection Pregnancy Test and Clearblue Plus Pregnancy Test All the pregnancy tests by the brand Clearblue have a blue color-coded result display. They are over 99% accurate and can be used six days earlier than your missed periods. Be careful about the hCG strip turning pink of the Clearblue Easy Pregnancy Test with color changing tip.

Pregnancy tests assess for hCG, or the hormone human chorionic gonadotropin, of placental origin. The hormone is found in the bloodstream once the fertilized zygote implants in the uterus—post six to 10 days of conception,” explains Dr. Gaither. “One can take a test too early, get a negative result, yet still be pregnant.”

What other kinds of pregnancy tests are there?

And while they're over 99% accurate two days before your expected period, they can work up to five days before. If you’re keen to test early, but don’t want to leave yourself squinting into the sunlight or editing photos of your pregnancy tests to see if that line is solely in your imagination, the Clearblue Digital Early Detection Pregnancy test can make the testing experience a whole lot simpler. Unlike dye-based tests that require looking out for a line or cross in the results window, these tests use digital technology instead. Pregnancy tests detect the pregnancy hormone human chorionic gonadotropin (hCG) through your urine (or blood if you visit the doctor’s office). “Pregnancy tests are approximately 99 percent accurate [and] best utilized after a missed period,” says Kecia Gaither, MD, an OB/GYN, maternal-fetal medicine specialist, and director of Perinatal Services and Maternal Fetal Medicine at NYC Health and Hospitals/Lincoln in the Bronx. “False positives are rare but can occur." You are able to use the Clearblue Digital Pregnancy test five days before a missed period (4 days before your expected period). Price