diff --git a/storage/remote/codec.go b/storage/remote/codec.go
index 48ef05bea0..9bea50f271 100644
--- a/storage/remote/codec.go
+++ b/storage/remote/codec.go
@@ -234,7 +234,7 @@ func StreamChunkedReadResponses(
 	for ss.Next() {
 		series := ss.At()
 		iter = series.Iterator(iter)
-			lbls = MergeLabels(prompb.FromLabels(series.Labels(), lbls), sortedExternalLabels)
+		lbls = MergeLabels(prompb.FromLabels(series.Labels(), lbls), sortedExternalLabels)
 
 		maxDataLength := maxBytesInFrame
 		for _, lbl := range lbls {
diff --git a/storage/remote/otlptranslator/prometheusremotewrite/helper_test.go b/storage/remote/otlptranslator/prometheusremotewrite/helper_test.go
index 05c4c45aa1..fe8f5435bf 100644
--- a/storage/remote/otlptranslator/prometheusremotewrite/helper_test.go
+++ b/storage/remote/otlptranslator/prometheusremotewrite/helper_test.go
@@ -20,12 +20,12 @@ import (
 	"context"
 	"testing"
 	"time"
-	
+
+	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
-	"google.golang.org/protobuf/proto"
 	"go.opentelemetry.io/collector/pdata/pcommon"
 	"go.opentelemetry.io/collector/pdata/pmetric"
-	"github.com/stretchr/testify/assert"
+	"google.golang.org/protobuf/proto"
 
 	"github.com/prometheus/common/model"
 
diff --git a/storage/remote/otlptranslator/prometheusremotewrite/histograms_test.go b/storage/remote/otlptranslator/prometheusremotewrite/histograms_test.go
index bd0e777e8c..492a006cfc 100644
--- a/storage/remote/otlptranslator/prometheusremotewrite/histograms_test.go
+++ b/storage/remote/otlptranslator/prometheusremotewrite/histograms_test.go
@@ -448,9 +448,9 @@ func TestExponentialToNativeHistogram(t *testing.T) {
 					Schema:         1,
 					ZeroThreshold:  defaultZeroThreshold,
 					ZeroCount:      &prompb.Histogram_ZeroCountInt{ZeroCountInt: 1},
-					NegativeSpans:  []prompb.BucketSpan{{Offset: 2, Length: 2}},
+					NegativeSpans:  []*prompb.BucketSpan{{Offset: 2, Length: 2}},
 					NegativeDeltas: []int64{1, 0},
-					PositiveSpans:  []prompb.BucketSpan{{Offset: 2, Length: 2}},
+					PositiveSpans:  []*prompb.BucketSpan{{Offset: 2, Length: 2}},
 					PositiveDeltas: []int64{1, 0},
 					Timestamp:      500,
 				}
@@ -481,9 +481,9 @@ func TestExponentialToNativeHistogram(t *testing.T) {
 					Schema:         1,
 					ZeroThreshold:  defaultZeroThreshold,
 					ZeroCount:      &prompb.Histogram_ZeroCountInt{ZeroCountInt: 1},
-					NegativeSpans:  []prompb.BucketSpan{{Offset: 2, Length: 2}},
+					NegativeSpans:  []*prompb.BucketSpan{{Offset: 2, Length: 2}},
 					NegativeDeltas: []int64{1, 0},
-					PositiveSpans:  []prompb.BucketSpan{{Offset: 2, Length: 2}},
+					PositiveSpans:  []*prompb.BucketSpan{{Offset: 2, Length: 2}},
 					PositiveDeltas: []int64{1, 0},
 					Timestamp:      500,
 				}
@@ -523,9 +523,9 @@ func TestExponentialToNativeHistogram(t *testing.T) {
 					Schema:         8,
 					ZeroThreshold:  defaultZeroThreshold,
 					ZeroCount:      &prompb.Histogram_ZeroCountInt{ZeroCountInt: 1},
-					PositiveSpans:  []prompb.BucketSpan{{Offset: 2, Length: 3}},
+					PositiveSpans:  []*prompb.BucketSpan{{Offset: 2, Length: 3}},
 					PositiveDeltas: []int64{1, 0, 0}, // 1, 1, 1
-					NegativeSpans:  []prompb.BucketSpan{{Offset: 3, Length: 3}},
+					NegativeSpans:  []*prompb.BucketSpan{{Offset: 3, Length: 3}},
 					NegativeDeltas: []int64{1, 0, 0}, // 1, 1, 1
 					Timestamp:      500,
 				}
@@ -555,9 +555,9 @@ func TestExponentialToNativeHistogram(t *testing.T) {
 					Schema:         8,
 					ZeroThreshold:  defaultZeroThreshold,
 					ZeroCount:      &prompb.Histogram_ZeroCountInt{ZeroCountInt: 1},
-					PositiveSpans:  []prompb.BucketSpan{{Offset: 1, Length: 2}},
+					PositiveSpans:  []*prompb.BucketSpan{{Offset: 1, Length: 2}},
 					PositiveDeltas: []int64{1, 1}, // 0+1, 1+1 = 1, 2
-					NegativeSpans:  []prompb.BucketSpan{{Offset: 2, Length: 2}},
+					NegativeSpans:  []*prompb.BucketSpan{{Offset: 2, Length: 2}},
 					NegativeDeltas: []int64{2, -1}, // 1+1, 1+0 = 2, 1
 					Timestamp:      500,
 				}
@@ -575,8 +575,8 @@ func TestExponentialToNativeHistogram(t *testing.T) {
 
 			require.NoError(t, err)
 			require.Empty(t, annots)
-			assert.Equal(t, tt.wantNativeHist(), got)
-			validateNativeHistogramCount(t, got)
+			assert.Equal(t, tt.wantNativeHist(), *got)
+			validateNativeHistogramCount(t, *got)
 		})
 	}
 }
@@ -644,20 +644,20 @@ func TestPrometheusConverter_addExponentialHistogramDataPoints(t *testing.T) {
 				return metric
 			},
 			wantSeries: func() map[uint64]*prompb.TimeSeries {
-				labels := []prompb.Label{
+				labels := []*prompb.Label{
 					{Name: model.MetricNameLabel, Value: "test_hist"},
 					{Name: "attr", Value: "test_attr"},
 				}
 				return map[uint64]*prompb.TimeSeries{
 					timeSeriesSignature(labels): {
 						Labels: labels,
-						Histograms: []prompb.Histogram{
+						Histograms: []*prompb.Histogram{
 							{
 								Count:          &prompb.Histogram_CountInt{CountInt: 7},
 								Schema:         1,
 								ZeroThreshold:  defaultZeroThreshold,
 								ZeroCount:      &prompb.Histogram_ZeroCountInt{ZeroCountInt: 0},
-								PositiveSpans:  []prompb.BucketSpan{{Offset: 0, Length: 2}},
+								PositiveSpans:  []*prompb.BucketSpan{{Offset: 0, Length: 2}},
 								PositiveDeltas: []int64{4, -2},
 							},
 							{
@@ -665,11 +665,11 @@ func TestPrometheusConverter_addExponentialHistogramDataPoints(t *testing.T) {
 								Schema:         1,
 								ZeroThreshold:  defaultZeroThreshold,
 								ZeroCount:      &prompb.Histogram_ZeroCountInt{ZeroCountInt: 0},
-								PositiveSpans:  []prompb.BucketSpan{{Offset: 0, Length: 3}},
+								PositiveSpans:  []*prompb.BucketSpan{{Offset: 0, Length: 3}},
 								PositiveDeltas: []int64{4, -2, -1},
 							},
 						},
-						Exemplars: []prompb.Exemplar{
+						Exemplars: []*prompb.Exemplar{
 							{Value: 1},
 							{Value: 2},
 						},
@@ -703,11 +703,11 @@ func TestPrometheusConverter_addExponentialHistogramDataPoints(t *testing.T) {
 				return metric
 			},
 			wantSeries: func() map[uint64]*prompb.TimeSeries {
-				labels := []prompb.Label{
+				labels := []*prompb.Label{
 					{Name: model.MetricNameLabel, Value: "test_hist"},
 					{Name: "attr", Value: "test_attr"},
 				}
-				labelsAnother := []prompb.Label{
+				labelsAnother := []*prompb.Label{
 					{Name: model.MetricNameLabel, Value: "test_hist"},
 					{Name: "attr", Value: "test_attr_two"},
 				}
@@ -715,33 +715,33 @@ func TestPrometheusConverter_addExponentialHistogramDataPoints(t *testing.T) {
 				return map[uint64]*prompb.TimeSeries{
 					timeSeriesSignature(labels): {
 						Labels: labels,
-						Histograms: []prompb.Histogram{
+						Histograms: []*prompb.Histogram{
 							{
 								Count:          &prompb.Histogram_CountInt{CountInt: 7},
 								Schema:         1,
 								ZeroThreshold:  defaultZeroThreshold,
 								ZeroCount:      &prompb.Histogram_ZeroCountInt{ZeroCountInt: 0},
-								PositiveSpans:  []prompb.BucketSpan{{Offset: 0, Length: 2}},
+								PositiveSpans:  []*prompb.BucketSpan{{Offset: 0, Length: 2}},
 								PositiveDeltas: []int64{4, -2},
 							},
 						},
-						Exemplars: []prompb.Exemplar{
+						Exemplars: []*prompb.Exemplar{
 							{Value: 1},
 						},
 					},
 					timeSeriesSignature(labelsAnother): {
 						Labels: labelsAnother,
-						Histograms: []prompb.Histogram{
+						Histograms: []*prompb.Histogram{
 							{
 								Count:          &prompb.Histogram_CountInt{CountInt: 4},
 								Schema:         1,
 								ZeroThreshold:  defaultZeroThreshold,
 								ZeroCount:      &prompb.Histogram_ZeroCountInt{ZeroCountInt: 0},
-								NegativeSpans:  []prompb.BucketSpan{{Offset: 0, Length: 3}},
+								NegativeSpans:  []*prompb.BucketSpan{{Offset: 0, Length: 3}},
 								NegativeDeltas: []int64{4, -2, -1},
 							},
 						},
-						Exemplars: []prompb.Exemplar{
+						Exemplars: []*prompb.Exemplar{
 							{Value: 2},
 						},
 					},
diff --git a/storage/remote/otlptranslator/prometheusremotewrite/number_data_points_test.go b/storage/remote/otlptranslator/prometheusremotewrite/number_data_points_test.go
index e932269644..5ba5f260ac 100644
--- a/storage/remote/otlptranslator/prometheusremotewrite/number_data_points_test.go
+++ b/storage/remote/otlptranslator/prometheusremotewrite/number_data_points_test.go
@@ -45,13 +45,13 @@ func TestPrometheusConverter_addGaugeNumberDataPoints(t *testing.T) {
 				)
 			},
 			want: func() map[uint64]*prompb.TimeSeries {
-				labels := []prompb.Label{
+				labels := []*prompb.Label{
 					{Name: model.MetricNameLabel, Value: "test"},
 				}
 				return map[uint64]*prompb.TimeSeries{
 					timeSeriesSignature(labels): {
 						Labels: labels,
-						Samples: []prompb.Sample{
+						Samples: []*prompb.Sample{
 							{
 								Value:     1,
 								Timestamp: convertTimeStamp(pcommon.Timestamp(ts)),
@@ -100,13 +100,13 @@ func TestPrometheusConverter_addSumNumberDataPoints(t *testing.T) {
 				)
 			},
 			want: func() map[uint64]*prompb.TimeSeries {
-				labels := []prompb.Label{
+				labels := []*prompb.Label{
 					{Name: model.MetricNameLabel, Value: "test"},
 				}
 				return map[uint64]*prompb.TimeSeries{
 					timeSeriesSignature(labels): {
 						Labels: labels,
-						Samples: []prompb.Sample{
+						Samples: []*prompb.Sample{
 							{
 								Value:     1,
 								Timestamp: convertTimeStamp(ts),
@@ -128,17 +128,17 @@ func TestPrometheusConverter_addSumNumberDataPoints(t *testing.T) {
 				return m
 			},
 			want: func() map[uint64]*prompb.TimeSeries {
-				labels := []prompb.Label{
+				labels := []*prompb.Label{
 					{Name: model.MetricNameLabel, Value: "test"},
 				}
 				return map[uint64]*prompb.TimeSeries{
 					timeSeriesSignature(labels): {
 						Labels: labels,
-						Samples: []prompb.Sample{{
+						Samples: []*prompb.Sample{{
 							Value:     1,
 							Timestamp: convertTimeStamp(ts),
 						}},
-						Exemplars: []prompb.Exemplar{
+						Exemplars: []*prompb.Exemplar{
 							{Value: 2},
 						},
 					},
@@ -161,22 +161,22 @@ func TestPrometheusConverter_addSumNumberDataPoints(t *testing.T) {
 				return metric
 			},
 			want: func() map[uint64]*prompb.TimeSeries {
-				labels := []prompb.Label{
+				labels := []*prompb.Label{
 					{Name: model.MetricNameLabel, Value: "test_sum"},
 				}
-				createdLabels := []prompb.Label{
+				createdLabels := []*prompb.Label{
 					{Name: model.MetricNameLabel, Value: "test_sum" + createdSuffix},
 				}
 				return map[uint64]*prompb.TimeSeries{
 					timeSeriesSignature(labels): {
 						Labels: labels,
-						Samples: []prompb.Sample{
+						Samples: []*prompb.Sample{
 							{Value: 1, Timestamp: convertTimeStamp(ts)},
 						},
 					},
 					timeSeriesSignature(createdLabels): {
 						Labels: createdLabels,
-						Samples: []prompb.Sample{
+						Samples: []*prompb.Sample{
 							{Value: float64(convertTimeStamp(ts)), Timestamp: convertTimeStamp(ts)},
 						},
 					},
@@ -197,13 +197,13 @@ func TestPrometheusConverter_addSumNumberDataPoints(t *testing.T) {
 				return metric
 			},
 			want: func() map[uint64]*prompb.TimeSeries {
-				labels := []prompb.Label{
+				labels := []*prompb.Label{
 					{Name: model.MetricNameLabel, Value: "test_sum"},
 				}
 				return map[uint64]*prompb.TimeSeries{
 					timeSeriesSignature(labels): {
 						Labels: labels,
-						Samples: []prompb.Sample{
+						Samples: []*prompb.Sample{
 							{Value: 0, Timestamp: convertTimeStamp(ts)},
 						},
 					},
@@ -224,13 +224,13 @@ func TestPrometheusConverter_addSumNumberDataPoints(t *testing.T) {
 				return metric
 			},
 			want: func() map[uint64]*prompb.TimeSeries {
-				labels := []prompb.Label{
+				labels := []*prompb.Label{
 					{Name: model.MetricNameLabel, Value: "test_sum"},
 				}
 				return map[uint64]*prompb.TimeSeries{
 					timeSeriesSignature(labels): {
 						Labels: labels,
-						Samples: []prompb.Sample{
+						Samples: []*prompb.Sample{
 							{Value: 0, Timestamp: convertTimeStamp(ts)},
 						},
 					},