diff --git a/packages/google-analytics-admin/samples/test/quickstart.test.js b/packages/google-analytics-admin/samples/test/quickstart.test.js
index de63dbe0b6f..2fd67139a40 100644
--- a/packages/google-analytics-admin/samples/test/quickstart.test.js
+++ b/packages/google-analytics-admin/samples/test/quickstart.test.js
@@ -26,13 +26,9 @@ const execSync = cmd => cp.execSync(cmd, {encoding: 'utf-8'});
 
 const cwd = path.join(__dirname, '..');
 
-describe.skip('Quickstart', async () => {
+describe('Quickstart', async () => {
   it('should run quickstart', async () => {
-    try {
-      execSync('node quickstart.js', {cwd});
-    } catch (err) {
-      // Since we don't have credentials, we need to assert this eror
-      assert.match(err, /insufficient authentication scopes/);
-    }
+    const output = execSync('node quickstart.js', {cwd});
+    assert(output != null);
   });
 });
diff --git a/packages/google-analytics-data/samples/test/quickstart.test.js b/packages/google-analytics-data/samples/test/quickstart.test.js
index e4d184d31de..08601da6ebc 100644
--- a/packages/google-analytics-data/samples/test/quickstart.test.js
+++ b/packages/google-analytics-data/samples/test/quickstart.test.js
@@ -25,7 +25,7 @@ const execSync = cmd => cp.execSync(cmd, {encoding: 'utf-8'});
 
 const GA4_PROPERTY_ID = process.env.GA4_PROPERTY_ID || '222596558';
 
-describe.skip('Quickstart', () => {
+describe('Quickstart', () => {
   it('should run quickstart', async () => {
     // eslint-disable-next-line no-unused-vars
     const stdout = execSync(`node ./quickstart.js ${GA4_PROPERTY_ID}`);
diff --git a/packages/google-area120-tables/samples/test/quickstart.test.js b/packages/google-area120-tables/samples/test/quickstart.test.js
index 80df338c665..c7a08d9b853 100644
--- a/packages/google-area120-tables/samples/test/quickstart.test.js
+++ b/packages/google-area120-tables/samples/test/quickstart.test.js
@@ -27,7 +27,7 @@ const {TablesServiceClient} = require('@google/area120-tables');
 
 const client = new TablesServiceClient();
 
-describe.skip('Quickstart', () => {
+describe('Quickstart', () => {
   let projectId;
 
   before(async () => {
diff --git a/packages/google-iam-credentials/samples/test/quickstart.js b/packages/google-iam-credentials/samples/test/quickstart.js
index b55952701b2..72562885958 100644
--- a/packages/google-iam-credentials/samples/test/quickstart.js
+++ b/packages/google-iam-credentials/samples/test/quickstart.js
@@ -28,17 +28,9 @@ const cwd = path.join(__dirname, '..');
 
 describe('Quickstart', () => {
   it('should run quickstart', async () => {
-    // We no longer use service account credentials, so we must assert an error
-    try {
-      execSync(
-        'node ./quickstart.js fake_account@long-door-651.iam.gserviceaccount.com https://www.googleapis.com/auth/iam',
-        {cwd}
-      );
-    } catch (err) {
-      assert.match(
-        err,
-        /Gaia id not found for email fake_account@long-door-651.iam.gserviceaccount.com/
-      );
-    }
+    const output = execSync(
+      'node ./quickstart.js kokoro-system-test@long-door-651.iam.gserviceaccount.com https://www.googleapis.com/auth/iam'
+    );
+    assert(output != null);
   });
 });