TH and PHA testing are both required by ASA. 

• ASA will test the top 50 sires based on the number of progeny reported in the previous calendar year and thereafter any new sire entering the top 50 Sires list.
• Progeny out of a registered suspect animal cannot be registered until the suspect animal (parent) is tested. 
• A suspect animal is an animal that:
  
  • Has not been tested and has 1/8 or more Shorthorn, Maine Anjou, or Chianina blood.
    
    OR
    
  • Is out of a TH or PHA carrier and has not been tested free.

• ASA’s procedure for TH/PHA testing includes DNA genotyping of the tested animal.
• If you’ve submitted a blood sample to be tested for TH, the same sample can be tested for PHA.  The member is responsible for contacting AgriGenomics to request the sample be tested for PHA.
  

Sample Submission Form

Instructions for Sample Submission