The Ciccarone Center for the Prevention of Cardiovascular Disease at Johns Hopkins has developed this app to provide automated calculation of LDL cholesterol by the method published by Martin and colleagues in the Journal of the American Medical Association (doi:10.1001/jama.2013.280532).

The inputs are the three direct measures from the standard lipid profile: total cholesterol, HDL cholesterol, and triglycerides.

Rather than the traditional one-size-fits-all approach of dividing triglycerides by a fixed factor, the Martin equation matches each person with a personalized factor to calculate the LDL cholesterol level.

The method has been used extensively validated and recommended by major clinical guidelines, such as those of the American Heart Association and American College of Cardiology.

The results and recommendations provided by this application are intended to inform but do not replace clinical judgment. Therapeutic options should be individualized and determined after discussion between the patient and their clinician.

The method for LDL-C calculation programmed into this app was developed through research by Dr. Seth S. Martin and colleagues in the Johns Hopkins Ciccarone Center. This app was developed through collaboration of Dr. Martin with Dr. Ted W. James, as well as Chris Doyle and Manar Alhamdy of the Tech Innovation Center at Johns Hopkins.

For-profit companies or anyone intending to redisplay or incorporate the LDL-C calculator must secure a license from the Johns Hopkins University. Please contact, for more information.

Copyright @ Johns Hopkins University 2020. All rights reserved.

What’s New

Version 1.2

Expanded FAQ section

Ratings and Reviews

4.5 out of 5
11 Ratings

11 Ratings

SBBpilot ,

Quick & easy to use

Quick & easy to use and since it calculates a lower LDL for me than the standard test, I like it! No, seriously, it seems to take into account my very high HDL in determining the LDL. It would be nice to be able to save data entries over time to track personal health. I read the developer’s notes, bit it would also be nice to have a bit more detailed explanation of how the calculations are derived.

Dr. Jack Martin ,

My son is a genius

What a great app son!

jlwill76 ,

It’s ok

I wish there was a way to save your information to better track

App Privacy

The developer, Johns Hopkins Digital, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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