diff --git a/app/lib/common/constants.dart b/app/lib/common/constants.dart
index 0d849293..440446e6 100644
--- a/app/lib/common/constants.dart
+++ b/app/lib/common/constants.dart
@@ -1,6 +1,8 @@
 import 'package:font_awesome_flutter/font_awesome_flutter.dart';
 import 'package:url_launcher/url_launcher.dart';
 
+import 'module.dart';
+
 const medicationsIcon = FontAwesomeIcons.pills;
 const genesIcon = FontAwesomeIcons.dna;
 
@@ -32,6 +34,11 @@ enum SpecialLookup {
   noResult,
 }
 
+List<String> unknownPhenotypes(BuildContext context) => [
+  'Indeterminate',
+  context.l10n.general_not_tested,
+];
+
 extension SpecialLookupValue on SpecialLookup {
   String get value {
     final valueMap = {
diff --git a/app/lib/common/widgets/annotation_table.dart b/app/lib/common/widgets/annotation_table.dart
index c2baa9a9..5faa120e 100644
--- a/app/lib/common/widgets/annotation_table.dart
+++ b/app/lib/common/widgets/annotation_table.dart
@@ -8,6 +8,7 @@ class TableRowDefinition {
     {
       this.keyTooltip,
       this.valueTooltip,
+      this.italicValue = false,
     }
   );
 
@@ -15,6 +16,7 @@ class TableRowDefinition {
   final String value;
   final String? keyTooltip;
   final String? valueTooltip;
+  final bool italicValue;
 }
 
 Widget buildTable(
@@ -22,7 +24,6 @@ Widget buildTable(
   {
     TextStyle? style,
     bool boldKey = true,
-    bool italicValue = false,
   }
 ) {
   return Column(
@@ -32,13 +33,10 @@ Widget buildTable(
         defaultColumnWidth: IntrinsicColumnWidth(),
         children: [
           _buildRow(
-            rowDefinition.key,
-            rowDefinition.value,
+            rowDefinition,
             style ?? PharMeTheme.textTheme.bodyMedium!,
             boldKey: boldKey,
             isLast: index == rowDefinitions.length - 1,
-            keyTooltip: rowDefinition.keyTooltip,
-            valueTooltip: rowDefinition.valueTooltip,
           ),
         ],
       ),
@@ -47,14 +45,11 @@ Widget buildTable(
 }
 
 TableRow _buildRow(
-  String key,
-  String value,
+  TableRowDefinition rowDefinition,
   TextStyle textStyle,
   {
     required bool boldKey,
     required bool isLast,
-    String? keyTooltip,
-    String? valueTooltip,
   }
 ) {
   return TableRow(
@@ -67,8 +62,8 @@ TableRow _buildRow(
         child: Text.rich(
           TextSpan(
             children: [
-              TextSpan(text: key),
-              ..._maybeBuildTooltip(keyTooltip),
+              TextSpan(text: rowDefinition.key),
+              ..._maybeBuildTooltip(rowDefinition.keyTooltip),
             ],
             style: boldKey
               ? textStyle.copyWith(fontWeight: FontWeight.bold)
@@ -79,8 +74,13 @@ TableRow _buildRow(
       Text.rich(
         TextSpan(
           children: [
-            TextSpan(text: value),
-            ..._maybeBuildTooltip(valueTooltip),
+            TextSpan(
+              text: rowDefinition.value,
+              style: rowDefinition.italicValue
+                ? textStyle.copyWith(fontStyle: FontStyle.italic)
+                : textStyle,
+            ),
+            ..._maybeBuildTooltip(rowDefinition.valueTooltip),
           ],
           style: textStyle,
         ),
@@ -100,4 +100,38 @@ List<WidgetSpan> _maybeBuildTooltip(String? tooltip) {
         WidgetSpan(child: SizedBox(height: tooltipSize)),
       ]
     : [];
+}
+
+bool testResultIsUnknown(BuildContext context, String phenotype) =>
+  unknownPhenotypes(context).contains(phenotype);
+
+TableRowDefinition testResultTableRow(
+  BuildContext context,
+  {
+    required String key,
+    required String value,
+    String? keyTooltip,
+  }
+) => TableRowDefinition(
+  key,
+  value,
+  keyTooltip: keyTooltip,
+  italicValue: testResultIsUnknown(context, value),
+);
+
+TableRowDefinition phenotypeTableRow(
+  BuildContext context,
+  {
+    required String key,
+    required GenotypeResult genotypeResult,
+    required String? drug,
+    String? keyTooltip,
+  }
+) {
+  return testResultTableRow(
+    context,
+    key: key,
+    value: possiblyAdaptedPhenotype(context, genotypeResult, drug: drug),
+    keyTooltip: keyTooltip,
+  );
 }
\ No newline at end of file
diff --git a/app/lib/drug/widgets/annotation_cards/guideline.dart b/app/lib/drug/widgets/annotation_cards/guideline.dart
index 2232f63f..6d16c68a 100644
--- a/app/lib/drug/widgets/annotation_cards/guideline.dart
+++ b/app/lib/drug/widgets/annotation_cards/guideline.dart
@@ -135,14 +135,12 @@ class GuidelineAnnotationCard extends StatelessWidget {
     }
     return buildTable(
       genotypeResults.map((genotypeResult) =>
-        TableRowDefinition(
-          genotypeResult.geneDisplayString,
-          possiblyAdaptedPhenotype(
-            context,
-            genotypeResult,
-            drug: drug.name,
-          ),
-        )
+        phenotypeTableRow(
+          context,
+          key: genotypeResult.geneDisplayString,
+          genotypeResult: genotypeResult,
+          drug: drug.name,
+        ),
       ).toList(),
     );
   }
diff --git a/app/lib/report/pages/gene.dart b/app/lib/report/pages/gene.dart
index 38e1d139..6d6420ad 100644
--- a/app/lib/report/pages/gene.dart
+++ b/app/lib/report/pages/gene.dart
@@ -96,14 +96,17 @@ class GenePage extends HookWidget {
   }
   
   Widget _buildGeneResults(BuildContext context) => buildTable([
-    TableRowDefinition(
-      context.l10n.gene_page_genotype,
-      genotypeResult.variantDisplayString(context),
+    testResultTableRow(
+      context,
+      key: context.l10n.gene_page_genotype,
+      value: genotypeResult.variantDisplayString(context),
       keyTooltip: context.l10n.gene_page_genotype_tooltip,
     ),
-    TableRowDefinition(
-      context.l10n.gene_page_phenotype,
-      possiblyAdaptedPhenotype(context, genotypeResult, drug: null),
+    phenotypeTableRow(
+      context,
+      key: context.l10n.gene_page_phenotype,
+      genotypeResult: genotypeResult,
+      drug: null,
       keyTooltip: context.l10n.gene_page_phenotype_tooltip,
     ),
   ]);
diff --git a/app/lib/report/pages/report.dart b/app/lib/report/pages/report.dart
index 5d96ce1f..342e4319 100644
--- a/app/lib/report/pages/report.dart
+++ b/app/lib/report/pages/report.dart
@@ -363,6 +363,11 @@ class GeneCard extends StatelessWidget {
           ),
         )
       : null;
+    final phenotype = possiblyAdaptedPhenotype(
+      context,
+      genotypeResult,
+      drug: null,
+    );
     return RoundedCard(
       onTap: () async {
         // ignore: use_build_context_synchronously
@@ -391,8 +396,12 @@ class GeneCard extends StatelessWidget {
                   runSpacing: PharMeTheme.smallSpace * 0.5,
                   children: [
                     Text(
-                      possiblyAdaptedPhenotype(context, genotypeResult, drug: null),
-                      style: PharMeTheme.textTheme.titleSmall,
+                      phenotype,
+                      style: testResultIsUnknown(context, phenotype)
+                        ? PharMeTheme.textTheme.titleSmall!.copyWith(
+                            fontStyle: FontStyle.italic,
+                          )
+                        : PharMeTheme.textTheme.titleSmall,
                     ),
                     SizedBox(width: PharMeTheme.smallSpace),
                     medicationIndicators ?? SizedBox.shrink(),