Translation guide
A person or thing used in an experiment, study, or trial. In Japanese, the translation depends on whether you mean a human participant, an animal, or an object being tested.
Referring to a person who takes part in a test, trial, or research study.
Standard term for a human test subject in scientific or medical contexts.
被験者は全員、同意書にサインした。
All test subjects signed the consent form.
Literally 'experiment participant'; often used in psychology or social science studies.
実験参加者には謝礼が支払われた。
The study participants were paid a reward.
Literally 'guinea pig'; used colloquially for a human test subject, often with a nuance of being experimented on.
新薬の治験で、彼はモルモットみたいなものだ。
In the clinical trial, he's like a guinea pig.
An animal on which experiments are conducted.
General term for laboratory animals.
実験動物の倫理的扱いが議論されている。
The ethical treatment of laboratory animals is being debated.
More formal term, often used in scientific papers.
被験動物にはマウスを用いた。
Mice were used as test subjects.
A non-living thing subjected to a test or examination.
Refers to a specimen or sample being tested, such as in engineering or material science.
試験体に圧力を加えて強度を測定した。
Pressure was applied to the test specimen to measure its strength.
Often used in medical testing for samples like blood or tissue.
被検体からDNAを抽出した。
DNA was extracted from the test sample.
The English phrase 'test subject' cannot be directly translated as テストサブジェクト. Use the appropriate Japanese term based on context.