diff --git a/src/clusterfuzz/_internal/cron/triage.py b/src/clusterfuzz/_internal/cron/triage.py
index 81491a587b..b939e0f1bb 100644
--- a/src/clusterfuzz/_internal/cron/triage.py
+++ b/src/clusterfuzz/_internal/cron/triage.py
@@ -363,11 +363,8 @@ def _file_issue(testcase, issue_tracker, throttler):
   return filed
 
 
-def _emit_untriaged_testcase_age_metric(critical_tasks_completed: bool,
-                                        testcase: data_types.Testcase):
+def _emit_untriaged_testcase_age_metric(testcase: data_types.Testcase):
   """Emmits a metric to track age of untriaged testcases."""
-  if critical_tasks_completed:
-    return
   if not testcase.timestamp:
     return
 
@@ -403,6 +400,8 @@ def main():
 
   throttler = Throttler()
 
+  untriaged_testcases = 0
+
   for testcase_id in data_handler.get_open_testcase_id_iterator():
     logs.info(f'Triaging {testcase_id}')
     try:
@@ -427,12 +426,11 @@ def main():
                 f' exclusion list ({testcase.job_type})')
       continue
 
-    # Emmit the metric for testcases that should be triaged.
-    _emit_untriaged_testcase_age_metric(critical_tasks_completed, testcase)
-
     # Skip if we are running progression task at this time.
     if testcase.get_metadata('progression_pending'):
       logs.info(f'Skipping testcase {testcase_id}, progression pending')
+      _emit_untriaged_testcase_age_metric(testcase)
+      untriaged_testcases += 1
       continue
 
     # If the testcase has a bug filed already, no triage is needed.
@@ -459,6 +457,8 @@ def main():
     # Require that all tasks like minimizaton, regression testing, etc have
     # finished.
     if not critical_tasks_completed:
+      _emit_untriaged_testcase_age_metric(testcase)
+      untriaged_testcases += 1
       logs.info(
           f'Skipping testcase {testcase_id}, critical tasks still pending.')
       continue
@@ -475,11 +475,15 @@ def main():
     # metadata works well.
     if not testcase.group_id and not dates.time_has_expired(
         testcase.timestamp, hours=data_types.MIN_ELAPSED_TIME_SINCE_REPORT):
+      _emit_untriaged_testcase_age_metric(testcase)
+      untriaged_testcases += 1
       logs.info(f'Skipping testcase {testcase_id}, pending grouping.')
       continue
 
     if not testcase.get_metadata('ran_grouper'):
       # Testcase should be considered by the grouper first before filing.
+      _emit_untriaged_testcase_age_metric(testcase)
+      untriaged_testcases += 1
       logs.info(f'Skipping testcase {testcase_id}, pending grouping.')
       continue
 
@@ -506,6 +510,10 @@ def main():
     # Clean up old triage messages that would be not applicable now.
     testcase.delete_metadata(TRIAGE_MESSAGE_KEY, update_testcase=False)
 
+    # A testcase is untriaged, until immediately before a bug is opened
+    _emit_untriaged_testcase_age_metric(testcase)
+    untriaged_testcases += 1
+
     # File the bug first and then create filed bug metadata.
     if not _file_issue(testcase, issue_tracker, throttler):
       logs.info(f'Issue filing failed for testcase id {testcase_id}')
@@ -517,6 +525,9 @@ def main():
     logs.info('Filed new issue %s for testcase %d.' % (testcase.bug_information,
                                                        testcase_id))
 
+    monitoring_metrics.UNTRIAGED_TESTCASE_COUNT.set(
+        untriaged_testcases, labels={})
+
   logs.info('Triage testcases succeeded.')
   return True
 
diff --git a/src/clusterfuzz/_internal/metrics/monitoring_metrics.py b/src/clusterfuzz/_internal/metrics/monitoring_metrics.py
index a65456bece..85ade7c86f 100644
--- a/src/clusterfuzz/_internal/metrics/monitoring_metrics.py
+++ b/src/clusterfuzz/_internal/metrics/monitoring_metrics.py
@@ -365,6 +365,14 @@
         monitor.StringField('platform'),
     ])
 
+UNTRIAGED_TESTCASE_COUNT = monitor.GaugeMetric(
+    'issues/untriaged_testcase_count',
+    description='Number of testcases that were not yet triaged '
+    '(have not yet completed analyze, regression,'
+    ' minimization, impact task), in hours.',
+    field_spec=[],
+)
+
 ANALYZE_TASK_REPRODUCIBILITY = monitor.CounterMetric(
     'task/analyze/reproducibility',
     description='Outcome count for analyze task.',