A negative pregnancy test can feel reassuring—or confusing when your period has not arrived.
The timing of the test matters.
Home pregnancy tests look for a hormone called hCG in urine. This hormone rises during pregnancy.
Different tests have different instructions and detection limits.
Testing too soon may mean there is not enough hCG for the test to detect.
A negative result does not always rule out pregnancy, especially early.
Follow the instructions for your specific test. Check its expiration date and read the result within the stated time window.
If you still think you may be pregnant, repeat testing as directed or contact a health care professional.
A home test cannot answer every question about a pregnancy’s location or health. A clinician may need other testing.
Diagnostic research can evaluate how tests perform. Some tests aim to provide more information than a simple positive or negative result.
The meaning of any additional information depends on the specific test and its evidence.
Source: FDA: Pregnancy tests