diff --git a/datastore/migrations/00009_AddTest_Methods_down.sql b/datastore/migrations/00009_AddTest_Methods_down.sql
new file mode 100644
index 0000000..83c5c3f
--- /dev/null
+++ b/datastore/migrations/00009_AddTest_Methods_down.sql
@@ -0,0 +1,5 @@
+-- bactdb
+-- Matthew R Dillon
+
+DROP TABLE test_methods;
+
diff --git a/datastore/migrations/00009_AddTest_Methods_up.sql b/datastore/migrations/00009_AddTest_Methods_up.sql
new file mode 100644
index 0000000..b61f56b
--- /dev/null
+++ b/datastore/migrations/00009_AddTest_Methods_up.sql
@@ -0,0 +1,14 @@
+-- bactdb
+-- Matthew R Dillon
+
+CREATE TABLE test_methods (
+    id BIGSERIAL NOT NULL,
+    name CHARACTER VARYING(100) NOT NULL,
+
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL,
+    updated_at TIMESTAMP WITH TIME ZONE NOT NULL,
+    deleted_at TIMESTAMP WITH TIME ZONE NULL,
+
+    CONSTRAINT test_methods_pkey PRIMARY KEY (id)
+);
+
diff --git a/datastore/migrations/00009_AddMeasurements_down.sql b/datastore/migrations/00010_AddMeasurements_down.sql
similarity index 100%
rename from datastore/migrations/00009_AddMeasurements_down.sql
rename to datastore/migrations/00010_AddMeasurements_down.sql
diff --git a/datastore/migrations/00009_AddMeasurements_up.sql b/datastore/migrations/00010_AddMeasurements_up.sql
similarity index 91%
rename from datastore/migrations/00009_AddMeasurements_up.sql
rename to datastore/migrations/00010_AddMeasurements_up.sql
index be5d107..614e053 100644
--- a/datastore/migrations/00009_AddMeasurements_up.sql
+++ b/datastore/migrations/00010_AddMeasurements_up.sql
@@ -11,6 +11,7 @@ CREATE TABLE measurements (
     confidence_interval NUMERIC(8, 3) NULL,
     unit_type_id BIGINT NULL,
     notes CHARACTER VARYING(255) NULL,
+    test_method_id BIGINT NULL,
 
     created_at TIMESTAMP WITH TIME ZONE NOT NULL,
     updated_at TIMESTAMP WITH TIME ZONE NOT NULL,
@@ -20,6 +21,7 @@ CREATE TABLE measurements (
     FOREIGN KEY (observation_id) REFERENCES observations(id),
     FOREIGN KEY (text_measurement_type_id) REFERENCES text_measurement_types(id),
     FOREIGN KEY (unit_type_id) REFERENCES unit_types(id),
+    FOREIGN KEY (test_method_id) REFERENCES test_methods(id),
     CONSTRAINT exclusive_data_type CHECK (
         (text_measurement_type_id IS NOT NULL
             AND txt_value IS NULL
@@ -46,3 +48,5 @@ CREATE INDEX text_measurement_type_id_idx ON measurements (text_measurement_type
 
 CREATE INDEX unit_type_id_idx ON measurements (unit_type_id);
 
+CREATE INDEX test_method_id_idx ON measurements (test_method_id);
+