diff --git a/metrics/metrics.go b/metrics/metrics.go
index 1ec2c1b46..ec4776cbf 100644
--- a/metrics/metrics.go
+++ b/metrics/metrics.go
@@ -83,10 +83,11 @@ func init() {
 	}
 }
 
-// report converts and reports collected metrics via OTel metrics
-func report() {
+// report converts and reports collected metrics via OTel metrics.
+// Allow for report to be overridden in the test.
+var report = func() {
 	ctx := context.Background()
-	for i := 0; i < nMetrics; i++ {
+	for i := range nMetrics {
 		metric := metricsBuffer[i]
 		switch typ := metricTypes[metric.ID]; typ {
 		case MetricTypeCounter:
diff --git a/metrics/metrics_test.go b/metrics/metrics_test.go
index b8be5a225..dde648c53 100644
--- a/metrics/metrics_test.go
+++ b/metrics/metrics_test.go
@@ -11,6 +11,9 @@ import (
 
 // TestMetrics
 func TestMetrics(t *testing.T) {
+	// NOP report to avoid timing-based interference.
+	report = func() {}
+
 	inputMetrics := []Metric{
 		{IDELFInfoCacheHit, MetricValue(33)},
 		{IDELFInfoCacheMiss, MetricValue(55)},