diff --git a/apps/qm/views.py b/apps/qm/views.py
index 18c55e12..334abb9d 100644
--- a/apps/qm/views.py
+++ b/apps/qm/views.py
@@ -94,7 +94,8 @@ class PtestViewSet(CustomModelViewSet):
     queryset = Ptest.objects.all()
     serializer_class = PtestSerializer
     select_related_fields = ['testitem']
-    filterset_fields = ['testitem', 'test_date']
+    filterset_fields = ['testitem', 'test_date', 'sample_number']
+    search_fields = ['testitem__name', 'sample_number']
 
 
 class FtestWorkViewSet(CustomModelViewSet):