Pregnancy tests are urine-based: they detect the pregnancy hormone (hCG) in a urine sample.
Visual tests show colored lines or plus/minus symbols, while some tests provide a digital display with clear words such as "Pregnant" or "Not Pregnant."
At least some listings state a sensitivity of 25 mIU/mL as the detection threshold for hCG.
Review summaries report that many shoppers find the tests simple and easy to read, often praising fast, sensitive results and clear or digital readouts.
Most listings state over 99% accuracy from the day you expect your period or similar wording about high accuracy at expected-period timing.