diff --git a/emgapi/models.py b/emgapi/models.py
index 02f9cd51c..ae8194666 100644
--- a/emgapi/models.py
+++ b/emgapi/models.py
@@ -424,7 +424,6 @@ def available(self, request):
                     'latitude': "CAST(latitude as DECIMAL(10,5))"
                 }
             ) \
-            .annotate(runs_count=Count('runs')) \
             .prefetch_related(
                 Prefetch('studies', queryset=_qs2),
                 Prefetch('biome', queryset=Biome.objects.all()),
diff --git a/emgapi/serializers.py b/emgapi/serializers.py
index ffd5efcfa..8bced1aab 100644
--- a/emgapi/serializers.py
+++ b/emgapi/serializers.py
@@ -635,34 +635,15 @@ def get_studies(self, obj):
     def get_runs(self, obj):
         return None
 
-    # counters
-    runs_count = serializers.IntegerField()
-
     class Meta:
         model = emg_models.Sample
-        fields = (
-            'url',
-            'runs_count',
-            'accession',
-            'biosample',
-            'analysis_completed',
-            'collection_date',
-            'geo_loc_name',
-            'longitude',
-            'latitude',
-            'sample_desc',
-            'environment_biome',
-            'environment_feature',
-            'environment_material',
-            'sample_name',
-            'sample_alias',
-            'host_tax_id',
-            'species',
-            'last_update',
-            'biome',
-            'studies',
-            'runs',
-            'sample_metadata'
+        exclude = (
+            'primary_accession',
+            'is_public',
+            'metadata_received',
+            'sequencedata_received',
+            'sequencedata_archived',
+            'submission_account_id',
         )
 
 
diff --git a/tests/integration/test_examples.py b/tests/integration/test_examples.py
index 187b8be6c..b266e08c9 100644
--- a/tests/integration/test_examples.py
+++ b/tests/integration/test_examples.py
@@ -54,7 +54,6 @@ def test_list(self, live_server, runs, api_version):
                         study.bioproject,
                         sample.accession,
                         sample.biome.biome_name,
-                        sample.runs_count,
                         run.accession,
                         run.experiment_type,
                     )
diff --git a/tests/integration/test_sample.py b/tests/integration/test_sample.py
index 91f108b6b..a82a0359e 100644
--- a/tests/integration/test_sample.py
+++ b/tests/integration/test_sample.py
@@ -38,7 +38,7 @@ def test_details(self, client, sample):
         assert rsp['data']['type'] == "samples"
         assert rsp['data']['id'] == "ERS01234"
         _attr = rsp['data']['attributes']
-        assert(len(_attr) == 18)
+        assert(len(_attr) == 17)
         assert _attr['accession'] == "ERS01234"
         assert _attr['biosample'] == "SAMS01234"
         assert _attr['sample-desc'] == "abcdefghijklmnoprstuvwyz"