public function setLabTestAction()
 {
     $params = $this->_getParam('labTest');
     $labTest = new LabTest();
     if (isset($params['labTestId'])) {
         $labTest->labTestId = (int) $params['labTestId'];
         $labTest->populate();
     }
     $labTest->populateWithArray($params);
     $labTest->persist();
     $data = __('Lab test successfully set.');
     $json = Zend_Controller_Action_HelperBroker::getStaticHelper('json');
     $json->suppressExit = true;
     $json->direct($data);
 }