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What makes an assay “CPTAC Characterized?”
As described in the Assay Characterization Guidance, an assay receives a “CPTAC characterized” stamp of approval if it satisfies the following criteria: Experiments 1 and 2 are required for upload of assays into the portal. Other experiments are optional but highly encouraged.

How to cite the CPTAC assay portal in your publications?
When referring to Assay Portal, please cite: Whitaker et al. (2014).

When using, reporting, referencing, or redistributing individual assays, please cite the specific assay by ID number. For example: CPTAC-288.

How to provide feedback on individual assays?
CPTAC Assay Portal enables users to provide comments on individual assays in order to help the broad community of researchers. What was your experience with a given assay? Does it perform in a similar manner under different conditions? Did you alter the method to improve performance? You can provide feedback below the assay details. To find comments, from the “Gene / Protein” page, click on an assay of interest and scroll to the bottom of the page. The Assay Portal uses Disqus to provide the framework for commenting. Create an account with Disqus, or login using Facebook, Twitter, or Google account to get started.