為美國衛生機構官員提供谘詢的預防疾病服務工作組(The Preventative Services Task Force)說，對身體健康的男子而言，一種叫做PSA的簡單驗血可能弊大於利。
The Preventative Services Task Force, which provides consultations for officials of US health organizations, said that to a healthy man, PSA, which is a simple blood test procedure, could post more harms than benefits.
