Our Editorial Standards
At ACR Calculator, our goal is to provide reliable, highly accurate medical calculation tools and health information. We understand that our users rely on our tools to better understand their health metrics. Therefore, we maintain strict editorial standards to ensure that all information and algorithms presented on our site are grounded in current medical science.
Sourcing and Evidence-Based Content
We do not invent clinical formulas, nor do we rely on unverified sources for our medical content. Every calculator on this platform is built using validated equations published and endorsed by major medical organizations and peer-reviewed journals. Our primary sources include, but are not limited to:
- The National Kidney Foundation (NKF)
- Kidney Disease: Improving Global Outcomes (KDIGO)
- The National Institutes of Health (NIH)
- The American Heart Association (AHA)
- The American Diabetes Association (ADA)
When drafting the educational content surrounding each tool, our writers paraphrase and synthesize information directly from these clinical guidelines. This ensures that the context provided regarding normal ranges, clinical significance, and next steps is entirely evidence-based.
Medical Review Process
To guarantee the integrity of our content and tools, we employ a rigorous medical review process. Before a new calculator or substantial educational article is published, it undergoes evaluation by a qualified healthcare professional.
Our medical reviewers verify that:
- The mathematical formulas are coded accurately.
- The appropriate clinical guidelines are being referenced.
- The text explaining the medical concepts is clear, objective, and clinically sound.
- Any claims made regarding health outcomes are supported by current literature.
You will see a "Medically Reviewed" badge on pages that have passed this process, indicating the name and credentials of the reviewing professional.
Update and Maintenance Policy
Medical knowledge is not static. Guidelines are updated, and equations are refined over time (for example, the recent removal of race variables from eGFR calculations). We are committed to keeping our tools current.
We periodically review our calculators against newly published guidelines. When authoritative bodies release new standards of care that affect the formulas we use, we prioritize updating our algorithms and the accompanying text. The date of the last major update or medical review is displayed prominently on our content pages.
Corrections Policy
While we strive for perfection, errors can occur. If a user, medical professional, or team member identifies a factual error or a flaw in a calculator's algorithm, we take immediate action. We will investigate the issue, consult our medical reviewers if necessary, and correct the error as swiftly as possible.
If you believe you have found an error on our site, we encourage you to contact us through our Contact page so that we may address it promptly.