diff --git a/docs/docs/sales/sales_order.md b/docs/docs/sales/sales_order.md
index ebdf3d2e69..d1c8a790ff 100644
--- a/docs/docs/sales/sales_order.md
+++ b/docs/docs/sales/sales_order.md
@@ -234,3 +234,4 @@ The following [global settings](../settings/global.md) are available for sales o
 {{ globalsetting("SALESORDER_EDIT_COMPLETED_ORDERS") }}
 {{ globalsetting("SALESORDER_SHIP_COMPLETE") }}
 {{ globalsetting("SALESORDER_SHIPMENT_REQUIRES_CHECK") }}
+{{ globalsetting("SALESORDER_BLOCK_INCOMPLETE_ITEM_TESTS")}}
diff --git a/src/backend/InvenTree/common/setting/system.py b/src/backend/InvenTree/common/setting/system.py
index b06db79589..395794b3de 100644
--- a/src/backend/InvenTree/common/setting/system.py
+++ b/src/backend/InvenTree/common/setting/system.py
@@ -910,6 +910,14 @@ SYSTEM_SETTINGS: dict[str, InvenTreeSettingsKeyType] = {
         'default': False,
         'validator': bool,
     },
+    'SALESORDER_BLOCK_INCOMPLETE_ITEM_TESTS': {
+        'name': _('Block Incomplete Item Tests'),
+        'description': _(
+            'Prevent allocation of stock items to sales orders if required item tests are incomplete'
+        ),
+        'default': False,
+        'validator': bool,
+    },
     'PURCHASEORDER_REFERENCE_PATTERN': {
         'name': _('Purchase Order Reference Pattern'),
         'description': _(
diff --git a/src/backend/InvenTree/order/serializers.py b/src/backend/InvenTree/order/serializers.py
index c544d3b76d..80a2765b03 100644
--- a/src/backend/InvenTree/order/serializers.py
+++ b/src/backend/InvenTree/order/serializers.py
@@ -19,6 +19,7 @@ import order.models
 import part.filters as part_filters
 import stock.models
 import stock.serializers
+from common.settings import get_global_setting
 from company.serializers import (
     AddressBriefSerializer,
     CompanyBriefSerializer,
@@ -1663,6 +1664,15 @@ class SalesOrderShipmentAllocationItemSerializer(serializers.Serializer):
         stock_item = data['stock_item']
         quantity = data['quantity']
 
+        if get_global_setting('SALESORDER_BLOCK_INCOMPLETE_ITEM_TESTS'):
+            if (
+                stock_item.hasRequiredTests()
+                and not stock_item.passedAllRequiredTests()
+            ):
+                raise ValidationError({
+                    'stock_item': _('Stock item has not passed all required tests')
+                })
+
         if stock_item.serialized and quantity != 1:
             raise ValidationError({
                 'quantity': _('Quantity must be 1 for serialized stock item')
@@ -1853,6 +1863,14 @@ class SalesOrderSerialAllocationSerializer(serializers.Serializer):
 
             stock_item = items[0]
 
+            if get_global_setting('SALESORDER_BLOCK_INCOMPLETE_ITEM_TESTS'):
+                if (
+                    stock_item.hasRequiredTests()
+                    and not stock_item.passedAllRequiredTests()
+                ):
+                    serials_unavailable.add(str(serial))
+                    continue
+
             if not stock_item.in_stock:
                 serials_unavailable.add(str(serial))
                 continue
diff --git a/src/backend/InvenTree/order/test_api.py b/src/backend/InvenTree/order/test_api.py
index 7996301b1d..fae21e6e37 100644
--- a/src/backend/InvenTree/order/test_api.py
+++ b/src/backend/InvenTree/order/test_api.py
@@ -2404,6 +2404,43 @@ class SalesOrderAllocateTest(OrderTest):
             assert_subset=True,
         )
 
+    def test_block_on_required_tests(self):
+        """Test the SALESORDER_BLOCK_INCOMPLETE_ITEM_TESTS setting."""
+        from part.models import PartTestTemplate
+
+        line = self.order.lines.first()
+        part = line.part
+
+        # Make this a testable part
+        part.testable = True
+        part.save()
+
+        # Create a required test
+        PartTestTemplate.objects.create(
+            part=part, test_name='A required test', required=True
+        )
+
+        data = {
+            'items': [
+                {
+                    'line_item': line.pk,
+                    'stock_item': part.stock_items.last().pk,
+                    'quantity': line.quantity,
+                }
+            ]
+        }
+
+        set_global_setting('SALESORDER_BLOCK_INCOMPLETE_ITEM_TESTS', True)
+
+        response = self.post(self.url, data, expected_code=400)
+        self.assertIn(
+            'Stock item has not passed all required tests', str(response.data)
+        )
+
+        set_global_setting('SALESORDER_BLOCK_INCOMPLETE_ITEM_TESTS', False)
+
+        response = self.post(self.url, data, expected_code=201)
+
 
 class ReturnOrderTests(InvenTreeAPITestCase):
     """Unit tests for ReturnOrder API endpoints."""
diff --git a/src/frontend/src/pages/Index/Settings/SystemSettings.tsx b/src/frontend/src/pages/Index/Settings/SystemSettings.tsx
index 0556bac501..a8532c9c89 100644
--- a/src/frontend/src/pages/Index/Settings/SystemSettings.tsx
+++ b/src/frontend/src/pages/Index/Settings/SystemSettings.tsx
@@ -336,7 +336,8 @@ export default function SystemSettings() {
                 'SALESORDER_DEFAULT_SHIPMENT',
                 'SALESORDER_EDIT_COMPLETED_ORDERS',
                 'SALESORDER_SHIP_COMPLETE',
-                'SALESORDER_SHIPMENT_REQUIRES_CHECK'
+                'SALESORDER_SHIPMENT_REQUIRES_CHECK',
+                'SALESORDER_BLOCK_INCOMPLETE_ITEM_TESTS'
               ]}
             />
             <GlobalSettingList