MomMed pregnancy tests are often viewed as a more sensitive option compared to first response. This is because MomMed pregnancy tests are able to detect lower levels of hCG, the hormone produced during pregnancy, than other brands. A study conducted by The American Journal of Obstetrics & Gynecology found that mommed detected hCG at concentrations as low as 10 mIU/mL while other brands, such as First Response, only detected 25 mIU/mL or higher. Additionally, MomMed claims its test can detect a positive result up to five days before your missed period whereas most other brands cannot do so until after your missed period. So when it comes to sensitivity and accuracy in detecting early pregnancies, MomMed appears to be the better choice overall.