diff --git a/tests/helper/Android.bp b/tests/helper/Android.bp
index f77dae5..60d4be1 100644
--- a/tests/helper/Android.bp
+++ b/tests/helper/Android.bp
@@ -20,6 +20,7 @@
     static_libs: [
         "androidx.test.runner",
         "androidx.test.ext.junit",
+        "MicrodroidTestHelper",
         "VirtualizationTestHelper",
         "truth-prebuilt",
     ],
diff --git a/tests/helper/src/java/com/android/microdroid/test/common/MetricsProcessor.java b/tests/helper/src/java/com/android/microdroid/test/common/MetricsProcessor.java
index 41534f1..b6bc479 100644
--- a/tests/helper/src/java/com/android/microdroid/test/common/MetricsProcessor.java
+++ b/tests/helper/src/java/com/android/microdroid/test/common/MetricsProcessor.java
@@ -24,6 +24,12 @@
 public final class MetricsProcessor {
     private final String mPrefix;
 
+    public static String getMetricPrefix(String debugTag) {
+        return "avf_perf"
+            + ((debugTag != null && !debugTag.isEmpty()) ? "[" + debugTag + "]" : "")
+            + "/";
+    }
+
     public MetricsProcessor(String prefix) {
         mPrefix = prefix;
     }
diff --git a/tests/helper/src/java/com/android/microdroid/test/device/MicrodroidDeviceTestBase.java b/tests/helper/src/java/com/android/microdroid/test/device/MicrodroidDeviceTestBase.java
index a07731e..2905231 100644
--- a/tests/helper/src/java/com/android/microdroid/test/device/MicrodroidDeviceTestBase.java
+++ b/tests/helper/src/java/com/android/microdroid/test/device/MicrodroidDeviceTestBase.java
@@ -32,6 +32,7 @@
 import androidx.annotation.CallSuper;
 import androidx.test.core.app.ApplicationProvider;
 
+import com.android.microdroid.test.common.MetricsProcessor;
 import com.android.virt.VirtualizationTestHelper;
 
 import java.io.BufferedReader;
@@ -48,6 +49,11 @@
         return VirtualizationTestHelper.isCuttlefish(SystemProperties.get("ro.product.name"));
     }
 
+    public static String getMetricPrefix() {
+        return MetricsProcessor.getMetricPrefix(
+                SystemProperties.get("debug.hypervisor.metrics_tag"));
+    }
+
     // TODO(b/220920264): remove Inner class; this is a hack to hide virt APEX types
     protected static class Inner {
         private final boolean mProtectedVm;