diff --git a/primed/cdsa/tests/test_views.py b/primed/cdsa/tests/test_views.py
index 1cdfa57a..beb8e4e8 100644
--- a/primed/cdsa/tests/test_views.py
+++ b/primed/cdsa/tests/test_views.py
@@ -7620,6 +7620,30 @@ def test_response_requires_study_review_false(self):
         response = self.client.get(instance.get_absolute_url())
         self.assertNotContains(response, "Study review required")
 
+    def test_response_primary_cdsa(self):
+        """Response includes note about missing primary cdsa about study review required if true."""
+        agreement = factories.DataAffiliateAgreementFactory.create(
+            is_primary=True,
+        )
+        instance = factories.CDSAWorkspaceFactory.create(
+            study=agreement.study,
+        )
+        self.client.force_login(self.user)
+        response = self.client.get(instance.get_absolute_url())
+        self.assertContains(response, agreement.get_absolute_url())
+
+    def test_response_no_primary_cdsa(self):
+        """Response includes note about missing primary cdsa about study review required if true."""
+        instance = factories.CDSAWorkspaceFactory.create()
+        self.client.force_login(self.user)
+        response = self.client.get(instance.get_absolute_url())
+        self.assertContains(
+            response,
+            # """<dt class="col-sm-2">Associated CDSA</dt><dd class="col-sm-9">mdash;</dd>"""
+            """No primary CDSA"""
+            # """<dt class="col-sm-2">Associated CDSA</dt> <dd class="col-sm-9">&mdash;</dd>""",  # noqa: E501
+        )
+
 
 class CDSAWorkspaceCreateTest(AnVILAPIMockTestMixin, TestCase):
     """Tests of the WorkspaceCreate view from ACM with this app's CDSAWorkspace model."""
diff --git a/primed/templates/cdsa/cdsaworkspace_detail.html b/primed/templates/cdsa/cdsaworkspace_detail.html
index d8ea0341..3a192665 100644
--- a/primed/templates/cdsa/cdsaworkspace_detail.html
+++ b/primed/templates/cdsa/cdsaworkspace_detail.html
@@ -6,7 +6,17 @@
     {% include "snippets/gsr_restricted_badge.html" %}
   {% endif %}
 
-  {% if primary_cdsa.requires_study_review %}
+  {% if not primary_cdsa %}
+  <span class="badge bg-danger">
+    <span class="me-2 fa-solid fa-circle-exclamation"></span>
+      No primary CDSA
+    <span class="ms-2 fa-solid fa-circle-question"
+    data-bs-toggle="tooltip"
+    data-bs-placement="bottom"
+    data-bs-title="No active primary CDSA exists for this study."
+    ></span>
+  </span>
+  {% elif primary_cdsa.requires_study_review %}
   <span class="badge bg-warning text-dark">
     <span class="me-2 fa-solid fa-clipboard-check"></span>
       Study review required
@@ -24,6 +34,13 @@
 {% block workspace_data %}
   <dl class="row">
     <hr>
+    <dt class="col-sm-2">Associated CDSA</dt><dd class="col-sm-9">
+      {% if primary_cdsa %}
+        <a href="{{ primary_cdsa.get_absolute_url }}">{{ primary_cdsa }}</a>
+      {% else %}
+        &mdash;
+      {% endif %}
+    </dd>
     <dt class="col-sm-2">Study</dt> <dd class="col-sm-9">
       <a href="{{ object.cdsaworkspace.study.get_absolute_url }}">{{ object.cdsaworkspace.study }}</a>
     </dd>