noun
pregnancy test
Refers to the medical test or the act of testing for pregnancy.
妊娠検査で陽性が出た。
The pregnancy test came back positive.
市販の妊娠検査薬を使った。
I used an over-the-counter pregnancy test kit.
Specifically refers to a pregnancy test kit or drug, while 妊娠検査 is the test itself.
Compound of 妊娠 (pregnancy) and 検査 (test, examination).