| Subject | English | Latvian |
| gen. | bid challenge | apstrīdēšana |
| 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 |
| comp., MS | HIP challenge | HIP pārbaudes jautājums (A challenge meant to be easily solved by humans, while remaining too hard to be economically solved by computers) |
| health., anim.husb. | homologous challenge | homologā pārbaude |
| industr. | industrial challenge | rūpniecības problēmas |
| health., R&D. | Joint Programming Initiative "The Microbial Challenge - An Emerging Threat to Human Health" | kopīgas plānošanas iniciatīva "Mikrobu problēma – jauns cilvēka veselības apdraudējums" |
| comp., MS | payment instrument challenge | maksāšanas līdzekļa pārbaude (A fraud prevention mechanism that attempts to verify that an individual using a payment instrument is authorized to use or is the owner of that instrument) |
| R&D. | Urban Europe - Global Challenges, Local Solutions | Eiropas pilsētas – globālas problēmas, vietēji risinājumi |
| environ., R&D. | Water Challenges for a Changing World | Ūdens problēmas mainīgā pasaulē |