# ContrastRx > Medical reference for contrast reaction treatment, including calculators and fibrosis information. (iPhone/iPad app by Mayo Clinic.) - Source: https://appshunter.io/ios/app/contrastrx/id619478666 (this page in markdown: same URL + `.md`) - Developer: [Mayo Clinic](https://appshunter.io/developer/350350016) - Category: Medical - Price: Free - Rating: 4.40/5 from 9 App Store ratings · 4 written reviews indexed - Age rating: 17+ - Requires: iOS 16.6 · 9 MB - Languages: American English - Released: 2013-04-18 - Data updated: 2026-08-18 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/contrastrx/id619478666/reviews.md ## What is ContrastRx? This app provides quick access to treatment regimens for potentially life-threatening reactions that can occur with iodine or gadolinium radiographic contrast. Included are clinical descriptions, pictorial examples, sound clips, and treatment regimens for the various types of reactions. Also included are a pediatric dose calculator, an eGFR calculator, a self-assessment module, pretreatment medication regimens, and an overview of nephrogenic systemic fibrosis. ## Key features - Treatment regimens for contrast reactions - Clinical descriptions and pictorial examples - eGFR calculator - Pediatric dose calculator - Steroid pretreatment regimens - Nephrogenic systemic fibrosis overview ## Recent user reviews (4 of 4) All indexed reviews: https://appshunter.io/ios/app/contrastrx/id619478666/reviews.md ### 5/5 — -My dad is rapper Lil Wayne and his full name is Dwayne Michael Carter. My full name is on Review! *2025-02-24* - Hello dad i just downloaded those important blue and white Mayo Clinic apps to my iPhone! My Full name is Brandon Lewis Pleasant Stewart. ### 5/5 — The must have app for those monitoring contrast administrations *2022-10-21* This app provides succinct high yield content that radiologists, radiology trainees, and anyone monitoring patients for contrast reactions should download now. The app provides all the relevant scenarios, which are clearly described. The app also provides management information that is quickly available with embedded correlative pictures as is relevant. Download yours today so that it’s available when you need it. ### 3/5 — MD *2015-02-14* Does a good job for adults but no pediatric info. Peds dosing has been included in the small Mayo pocket guide for years and distributed at the ARLS course. It's the hardest to remember and not having it included is a big hole in the emergency safety net. Therefore 3 stars. ### 2/5 — Disappointing! *2014-05-01* Very short and vague. Read over entire app in 10 mins...not worth the $2.99 ## Frequently asked questions about ContrastRx ### What is ContrastRx used for? ContrastRx provides quick access to treatment regimens for potentially life-threatening reactions that can occur with iodine or gadolinium radiographic contrast. It includes clinical descriptions, pictorial examples, and treatment protocols. ### Does ContrastRx have ads? No, ContrastRx does not contain advertisements. It is a completely free and ad-free application. ### What devices is ContrastRx available on? ContrastRx is available on iPhone and iPad devices. It is designed for iOS users. ### How often is ContrastRx updated? The latest version of ContrastRx is 1.5, which was last updated on October 12, 2022. This indicates it receives periodic updates. ### What is the age rating for ContrastRx? ContrastRx has an age rating of 17+, suggesting it is intended for mature audiences due to its medical content. ### What calculators are included in ContrastRx? ContrastRx includes an eGFR calculator and a pediatric dose calculator to assist medical professionals with patient care. ### What information is provided about nephrogenic systemic fibrosis? ContrastRx offers an overview of nephrogenic systemic fibrosis, a serious condition associated with gadolinium-based contrast agents. ### What is the user rating for ContrastRx? ContrastRx has a strong user rating of 4.4 stars based on 9 ratings, indicating positive user satisfaction. ## Version history (last 5 releases) ### 1.9 — 2026-06-19 Bug fixes & enhancements ### 1.8 — 2026-05-29 Enhancements and bug fixes ### 1.7 — 2026-05-10 Updates & Bug Fixes ### 1.6 — 2026-05-06 Updates and bug fixes ### 1.5 — 2022-10-12 This app includes updated contrast reaction treatment regimens, updated eGFR calculator, and a new pediatric dose calculator. ## Apps similar to ContrastRx | App | Rating | Price | Category | | --- | --- | --- | --- | | [Senyo by Mayo Clinic](https://appshunter.io/ios/app/senyo-by-mayo-clinic/id1659656615) | 5.0 (1) | Free | Medical | | [Radiology Core: Physics Plus](https://appshunter.io/ios/app/radiology-core-physics-plus/id1225040758) | 2.9 (50) | $9.99 | Medical | | [Radiology Core QBank: NIS RISC](https://appshunter.io/ios/app/radiology-core-qbank-nis-risc/id6751678537) | 5.0 (12) | Free | Medical | | [Thoracic Lymph Node Map](https://appshunter.io/ios/app/thoracic-lymph-node-map/id531517393) | 4.8 (25) | Free | Medical | | [CTisus iLecture Series 26](https://appshunter.io/ios/app/ctisus-ilecture-series-26/id570174986) | 4.8 (177) | Free | Medical | | [ASHNR connect](https://appshunter.io/ios/app/ashnr-connect/id6452084754) | 5.0 (1) | Free | Medical | ## More apps by Mayo Clinic - [Mayo Clinic](https://appshunter.io/ios/app/mayo-clinic/id523220194) - [Mayo Clinic CME](https://appshunter.io/ios/app/mayo-clinic-cme/id860591427) - [Mayo Clinic Cardiovascular CME](https://appshunter.io/ios/app/mayo-clinic-cardiovascular-cme/id1578924841) - [Primary Care On Demand](https://appshunter.io/ios/app/primary-care-on-demand/id6462700069) - [Mayo Clinic CV Research](https://appshunter.io/ios/app/mayo-clinic-cv-research/id6466618087) All apps by Mayo Clinic: https://appshunter.io/developer/350350016 ## Related topics [contrastrx](https://appshunter.io/ios/topics/contrastrx) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-18.*