diff --git a/basic.js b/basic.js
index d98b08f..aa5acf6 100644
--- a/basic.js
+++ b/basic.js
@@ -88,10 +88,10 @@ const getFieldData = async () => {
         );
 
         // Otherwise Extract Origin Field metrics (if there are)
-        const fieldFCP = fieldMetrics.FIRST_CONTENTFUL_PAINT_MS.percentile;
-        const fieldFID = fieldMetrics.FIRST_INPUT_DELAY_MS.percentile;
-        const fieldLCP = fieldMetrics.LARGEST_CONTENTFUL_PAINT_MS.percentile;
-        const fieldCLS = fieldMetrics.CUMULATIVE_LAYOUT_SHIFT_SCORE.percentile;
+        const fieldFCP = fieldMetrics.FIRST_CONTENTFUL_PAINT_MS ? fieldMetrics.FIRST_CONTENTFUL_PAINT_MS.percentile : "FIRST_CONTENTFUL_PAINT_MS undefined";
+        const fieldFID = fieldMetrics.FIRST_INPUT_DELAY_MS ? fieldMetrics.FIRST_INPUT_DELAY_MS.percentile : "FIRST_INPUT_DELAY_MS undefined";
+        const fieldLCP = fieldMetrics.LARGEST_CONTENTFUL_PAINT_MS ? fieldMetrics.LARGEST_CONTENTFUL_PAINT_MS.percentile : "LARGEST_CONTENTFUL_PAINT_MS undefined";
+        const fieldCLS = fieldMetrics.CUMULATIVE_LAYOUT_SHIFT_SCORE ? fieldMetrics.CUMULATIVE_LAYOUT_SHIFT_SCORE.percentile : "CUMULATIVE_LAYOUT_SHIFT_SCORE undefined";
 
         // Construct fieldResult object
         const fieldResObj = {
diff --git a/index.js b/index.js
index a0b3460..9fb0790 100644
--- a/index.js
+++ b/index.js
@@ -109,13 +109,10 @@ const getSpeedData = async (testNum = 1) => {
                 );
 
                 // Otherwise Extract Origin Field metrics (if there are)
-                const fieldFCP =
-                  fieldMetrics.FIRST_CONTENTFUL_PAINT_MS.percentile;
-                const fieldFID = fieldMetrics.FIRST_INPUT_DELAY_MS.percentile;
-                const fieldLCP =
-                  fieldMetrics.LARGEST_CONTENTFUL_PAINT_MS.percentile;
-                const fieldCLS =
-                  fieldMetrics.CUMULATIVE_LAYOUT_SHIFT_SCORE.percentile;
+                const fieldFCP = fieldMetrics.FIRST_CONTENTFUL_PAINT_MS ? fieldMetrics.FIRST_CONTENTFUL_PAINT_MS.percentile : "FIRST_CONTENTFUL_PAINT_MS undefined";
+                const fieldFID = fieldMetrics.FIRST_INPUT_DELAY_MS ? fieldMetrics.FIRST_INPUT_DELAY_MS.percentile : "FIRST_INPUT_DELAY_MS undefined";
+                const fieldLCP = fieldMetrics.LARGEST_CONTENTFUL_PAINT_MS ? fieldMetrics.LARGEST_CONTENTFUL_PAINT_MS.percentile : "LARGEST_CONTENTFUL_PAINT_MS undefined";
+                const fieldCLS = fieldMetrics.CUMULATIVE_LAYOUT_SHIFT_SCORE ? fieldMetrics.CUMULATIVE_LAYOUT_SHIFT_SCORE.percentile : "CUMULATIVE_LAYOUT_SHIFT_SCORE undefined";        
 
                 // Construct fieldResult object
                 const fieldResObj = {