Hook Effect and Twins
Does the Hook Effect in Pregnancy Tests Indicate Twins?

Learn why the hook effect in pregnancy tests can cause false negatives and why it doesn't necessarily mean twins or multiples.

Antibiotics & Pregnancy Tests
Can Antibiotics Cause a False Negative Pregnancy Test Result?

Learn if antibiotics affect pregnancy test accuracy. Find out why antibiotics do not cause false negatives in pregnancy tests detecting hCG hormone.