Donating Plasma賣血
https://biolifeplasma.com/
https://www.cslplasma.com/
https://www.octapharmaplasma.com/

Donating Sperm賣精液
https://www.thespermbankofca.org/
https://www.spermbankcalifornia.com/
https://www.spermbank.com/
https://www.sirebuyer.com/

Clinical Trials臨床試驗
https://participantsla.altasciences.com/

Online Research Studies
https://surveyworld12.me/