Assertion: pregnancy test | /r/CapableOf | become positive
Facets:
value: after implantation
type: TEMPORAL
Source sentences:
text: A pregnancy test, no matter if it's blood or urine, only becomes positive after implantation, when the fetus has attached to the uterine wall and connects with the mother's blood system.
text: When the pregnancy test first becomes positive has a wide variation and depends on several variables.
text: The lower the sensitivity, the earlier a pregnancy test becomes positive.