cPRA Assistant

Install cPRA Assistant

Install this application on your home screen for quick and easy access when you’re on the go.

Just tap Share then “Add to Home Screen”

  Enter your values here
Your data parsed and formatted
Calculation history:

Your last 5 calculations are displayed below, along with a link you can share with colleagues so they can also see your calculations.

Sharing the history link does not give the user the ability to edit your calculations, only to view them.

  Calculation Results
Please enter Unacceptable Antigens, then click Calculate to calculate the results

The cPRA Assistant is a tool to assist with the use of the Canadian cPRA Calculator, which was built by Canadian Blood Services for the Canadian Transplant Registry. It is available, at this time, as a tool for the use of Canadian HLA laboratories, for their internal purposes.

Copy and paste your results into one or both of the text fields, then click on Process. Once the results are processed, you will be presented with a hyperlink, which will take you to the selected cPRA Calculator.

You may paste your results in many formats, for example, the following are all acceptable:
A1 2 a11/a34, b35; a1 b7 56
(the example above will result in: A1 A2 A11 A34 B7 B35 B56; duplicates are ignored)

Disclaimer: This site is being offered as a tool only. It is used to assist with entering/selecting values that will be used by the Canadian cPRA Calculator. This site not associated with Canadian Blood Services, the Canadian Transplant Registry or the Canadian cPRA Calculator. When reviewing the calculation results, please ensure the values entered in this tool are also included in the resulting cPRA calculation page.

Calculation API endpoint: https://ctr2.transplantregistry.ca/otd-cpra/otd/cpra/cpracalculation

Canadian cPRA Calculator Assistant

API used by this utility:
https://ctr2.transplantregistry.ca/otd-cpra/otd/cpra/cpracalculation

The cPRA Assistant is a tool to assist with the use of the Canadian cPRA Calculator, which was built by Canadian Blood Services for the Canadian Transplant Registry. It is available, at this time, as a tool for the use of Canadian HLA laboratories, for their internal purposes.

Copy and paste your results into one or both of the text fields, then click on Process. Once the results are processed, you will be presented with a hyperlink, which will take you to the selected cPRA Calculator.

You may paste your results in many formats, for example, the following are all acceptable:
A1 2 a11/a34, b35; a1 b7 56
(the example above will result in: A1 A2 A11 A34 B7 B35 B56; duplicates are ignored)


Take a tour of the application features

Want to learn more about this utility and what it can do? Click on the map icon () located in the top-right area of the main page.


Need to perform many calculations?

Try the bulk calculator utility.

Canadian cPRA Calculator Assistant (https://pra-assistant.otdtcalculators.ca/)
PATIENT ID:
PATIENT NAME:
Disclaimer: This site is being offered as a tool only. It is used to assist with entering/selecting values that will be used by the Canadian cPRA Calculator. This site not associated with Canadian Blood Services, the Canadian Transplant Registry or the Canadian cPRA Calculator. When reviewing the calculation results, please ensure the values entered in this tool are also included in the resulting cPRA calculation page.

This document was printed: Thursday, April 30, 2026 06:34:59 pm Eastern

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