| Subject | English | Latvian |
| med., R&D. | challenge area | provokācijas laukums |
| med., pharma., R&D. | challenge dose | provokācijas deva |
| med., pharma., R&D. | challenge exposure | provocējoša ekspozīcija |
| comp., MS | Challenge Handshake Authentication Protocol | izaicinājumrokspiediena autentificēšanas protokols (A challenge-response authentication protocol for Point-to-Point Protocol (PPP) connections described in RFC 1994. It uses the industry-standard MD5 hashing algorithm to hash the combination of a challenge string issued by the authenticating server and the user's password in the response) |
| med., health., anim.husb. | challenge virus | pārbaudes vīruss |
| health., R&D. | Joint Programming Initiative "The Microbial Challenge - An Emerging Threat to Human Health" | kopīgas plānošanas iniciatīva "Mikrobu problēma – jauns cilvēka veselības apdraudējums" |