How this checker works
This checker compares your selected symptoms, gadolinium MRI count, exposure window, and symptom onset timing against published post-GBCA symptom patterns.
Your result is a pattern fit score, not a diagnosis and not a true disease probability.
Gadolinium Pattern Checker
Enter your symptoms and MRI contrast history to estimate how closely your pattern aligns with published post-GBCA symptom clusters.
Key Findings Used in This Checker
Survey Participants
316 patients with normal or near-normal renal function who experienced symptoms after MRI with a GBCA, plus 8 patients with biopsy-confirmed NSF.
Gadolinium Retention Confirmed
185 patients had laboratory tests confirming gadolinium retention 30 days or longer after their last MRI, with some cases showing retention for up to 22 years.
Symptom Overlap with NSF
19 of the 28 most frequently reported symptoms in the NSF Group were also ranked among the top symptoms reported by patients with normal renal function, indicating substantial overlap in clinical presentation.
Nervous System Impact
11 of the 19 most frequently reported symptoms across all patient groups involve the nervous system, consistent with gadolinium's toxic effects on calcium channels.
Unconfounded Cases
75 patients received only one type of GBCA (19 linear & 56 macrocyclic) with confirmed gadolinium retention. The same 14 nervous system symptoms ranked in the top 25 for both linear and macrocyclic agents.
Chronic Effects
43% of patients reported changes in employment status due to health issues, and 41% said altered brain function affects their ability to work as they did prior to MRIs.
Continue on the Symptoms Page
Review the full symptom breakdown, progression context, and supporting detail from the patient survey report.
Back to SymptomsResearch Reference
Williams, S., Grimm, H., Ratnam, S., Walsh, C. (2025). Signs & Symptoms after Gadolinium Administration: A Patient Survey. Report 1: Symptoms Paralleling Early-Phase NSF. Published Online: GadoliniumToxicity.com
Important medical note
Use this tool for education and self-organization before a clinician visit. For diagnosis, treatment, and urgent symptoms, seek licensed medical care.