Medically reviewed by Kiarra King, M.D. Key Points Expecting twins can rarely cause a false negative pregnancy test due to something called the "hook effect."It's best to test after a missed period ...

Evaporation lines on pregnancy tests are faint and colorless, appearing when the urine dries. Reading a pregnancy test within the recommended timeframe can prevent misinterpreting evaporation lines as ...

You squint. You hold it up to the light. You take it to the window, then back to the bathroom. You snap a photo and enhance the brightness. Is that really a line? Or just your desperate hope ...

Home pregnancy tests are miraculous little tools: They deliver fast results, are pretty simple to use, and can cost as little as a dollar. But they're not without their quirks – including the ...

Hormone levels in very early pregnancy are lower than later in pregnancy, which can make test line appear faint. For accuracy, follow the test instructions and retest if you’re unsure. When you take a ...