diff --git a/src/genlab_bestilling/migrations/0031_delete_all_isolationmethods.py b/src/genlab_bestilling/migrations/0031_delete_all_isolationmethods.py
new file mode 100644
index 00000000..f11d56f0
--- /dev/null
+++ b/src/genlab_bestilling/migrations/0031_delete_all_isolationmethods.py
@@ -0,0 +1,32 @@
+# Generated by Django 5.2.3 on 2025-07-22 10:26
+
+from django.db import migrations
+from django.db.migrations.state import StateApps
+from django.db.backends.base.schema import BaseDatabaseSchemaEditor
+
+
+def delete_isolation_methods(apps: StateApps, schema_editor: BaseDatabaseSchemaEditor):
+    IsolationMethod = apps.get_model("genlab_bestilling", "IsolationMethod")
+    IsolationMethod.objects.all().delete()
+
+
+def reverse_delete_isolation_methods(
+    apps: StateApps, schema_editor: BaseDatabaseSchemaEditor
+):
+    pass
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        (
+            "genlab_bestilling",
+            "0030_samplemarkeranalysis_has_pcr_and_more",
+        ),
+    ]
+
+    operations = [
+        migrations.RunPython(
+            delete_isolation_methods,
+            reverse_delete_isolation_methods,
+        ),
+    ]
diff --git a/src/genlab_bestilling/migrations/0032_alter_isolationmethod_remove_species_add_type_20250722_1226.py b/src/genlab_bestilling/migrations/0032_alter_isolationmethod_remove_species_add_type_20250722_1226.py
new file mode 100644
index 00000000..6ee93a71
--- /dev/null
+++ b/src/genlab_bestilling/migrations/0032_alter_isolationmethod_remove_species_add_type_20250722_1226.py
@@ -0,0 +1,26 @@
+# Generated by Django 5.2.3 on 2025-07-22 10:26
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        (
+            "genlab_bestilling",
+            "0031_delete_all_isolationmethods",
+        ),
+    ]
+
+    operations = [
+        migrations.RemoveField(model_name="isolationmethod", name="species"),
+        migrations.AddField(
+            model_name="isolationmethod",
+            name="type",
+            field=models.ForeignKey(
+                to="genlab_bestilling.sampletype",
+                on_delete=models.CASCADE,
+                related_name="type_isolation_methods",
+                help_text="The sample type this isolation method is related to.",
+            ),
+        ),
+    ]
diff --git a/src/genlab_bestilling/models.py b/src/genlab_bestilling/models.py
index 25672803..14a06c0a 100644
--- a/src/genlab_bestilling/models.py
+++ b/src/genlab_bestilling/models.py
@@ -816,13 +816,12 @@ def __str__(self) -> str:
 
 
 class IsolationMethod(models.Model):
-    name = models.CharField(max_length=255, unique=False)
-    species = models.ForeignKey(
-        f"{an}.Species",
+    name = models.CharField(max_length=255)
+    type = models.ForeignKey(
+        f"{an}.SampleType",
         on_delete=models.CASCADE,
-        related_name="species_isolation_methods",
-        help_text="The species this isolation method is related to.",
-        default=None,
+        related_name="type_isolation_methods",
+        help_text="The sample type this isolation method is related to.",
     )
 
     def __str__(self) -> str:
diff --git a/src/staff/views.py b/src/staff/views.py
index d3222144..58d4ca14 100644
--- a/src/staff/views.py
+++ b/src/staff/views.py
@@ -560,12 +560,9 @@ def get_queryset(self) -> QuerySet[Sample]:
         return Sample.objects.filter(order=self.get_order(), genlab_id__isnull=False)
 
     def get_isolation_methods(self) -> QuerySet[IsolationMethod, str]:
-        species_ids = (
-            self.get_queryset().values_list("species_id", flat=True).distinct()
-        )
-
+        types = self.get_queryset().values_list("type", flat=True).distinct()
         return (
-            IsolationMethod.objects.filter(species_id__in=species_ids)
+            IsolationMethod.objects.filter(type__in=types)
             .values_list("name", flat=True)
             .distinct()
         )