<H3>Special Instructions</H3> <p>The HITSP TP21 Query for Existing Data Transaction places no constraints on the IHE QED Transaction. The HITSP TP21 Clinical Data Source actor must complete each of the Prerequisite tests identified below. </P>	 <H3>Prerequisite:</H3> <p>Require: </P>  <li>QED_Preload</li> <p>Conditional - Required if Option is Selected: </P>  <li>QED_QueryDiagnosticResults </li>  <li>QED_QueryImmunizations </li>                <li>QED_QueryMedications</li>                      <li>QED_QueryProblemsAllergies</li>                       <li>QED_QueryProfessionalServices</li>                        <li>QED_QueryVitalSigns</li>                                    			 <H3>Evaluation:</H3 <p>The monitor will validate that all prerequisite tests are successfully completed.</P>  <H3>Description:</H3> <p>Complete all IHE prerequisite tests. Once these tests are completed, notify the Connectathon monitor or monitors responsible for HITSP TP21 Clinical Data Source Validation Test. </P>	