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June 24, 2019
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Promethease vs Codegen: which 3rd party health report is better?

While the health information included is comprehensive, both of these sites have a steep learning curve and are not user-friendly.
Tomohiro Takano

Promethease vs Codegen and are very similar sites. Both sites can be used to upload raw data from other DNA testing companies to discover genetic variants which have been correlated to health information in scientific papers. Promethease or Codegen can take raw DNA data from the test results of AncestryDNA, 23andMe, FamilyTreeDNA, and other genetic testing companies. The editors here at Genomelink have compared the two sites, so users can find the right platform for their needs.

Similarities between Promethease and Codegen

Both of these 3rd party sites are similar to “search engines”. After you upload your data, such as 23andMe data, the sites return a massive report on your genetic variants. The sites search scientific papers for mentions of correlations between the genetic variants of single nucleotide polymorphisms (SNPs) you carry, and the risk for various conditions that may affect your health in some way.

However, both of these sites also have a steep learning curve and are not user-friendly. Below are several sites from the International Society of Genetic Genealogy and Wiki which explain how to use Promethease and Codegen, if you are interested in doing your own research on genetic information. Alternatively, you can read this beginner’s guide on how to get the most out of your Promethease report.

ISOGG - Raw DNA Data Tools

Wikipedia - SNPedia and Promethease

Differences between Promethease and Codegen

The main difference that will matter to users of the two platforms is cost. Promethease charges $12 for every report, plus $4 for every additional raw data file included within the report (eg. you upload both your AncestryDNA and 23andMe raw data files). Codegen offers a free analysis of any genome, but only one genome can be analyzed at a time.

The companies also take a slightly different strategy to find and document SNPs related to health reports. Promethease was developed by the creators of, a website dedicated to documenting and reporting correlations with various genetic data. Many of their reports link to SNPedia articles which explain and discuss various genes, like an online genetic counselor.

Codegen also finds and documents various genetic conditions based on a data file, yet the Codegen platform stores all the information within the platform. Within your report, you will find information on what various SNPs contribute to your genetics. Also, Codegen has a unique feature which uses computer algorithms to rate whether a variant is “good” or “bad”, though the exact accuracy of this system has not been tested.

Other Options for Raw DNA Data Analysis

In general, these companies are very much the same. They both analyze a raw data file which can come from a number of sources, such as a 23andMe test. Both companies present their DNA test reports in an HTML format, allowing users to expand various sections and change certain parameters. A Promethease report relates to articles on SNPedia, while Codegen presents the majority of its information within its reports. Beyond that, there is not much difference between the two.

If you are looking for other options for exploring your raw DNA data, there are several options which others have used. Many of them are free, and with them, you can discover a wealth of information about your genetics! To find out more DNA upload sites, check out our article "The Best DNA Upload Sites"

Did you get 23andMe, AncestryDNA, or MyHeritage results back? Upload your raw DNA data to access 200+ traits for FREE at Genomelink!
Tomohiro Takano
Tomohiro Takano
Co-Founder and CEO