diff --git a/src/libraries/Common/tests/TestUtilities/System/PlatformDetection.cs b/src/libraries/Common/tests/TestUtilities/System/PlatformDetection.cs
index 3a32912136e992..8bd3953dc82d12 100644
--- a/src/libraries/Common/tests/TestUtilities/System/PlatformDetection.cs
+++ b/src/libraries/Common/tests/TestUtilities/System/PlatformDetection.cs
@@ -29,6 +29,8 @@ public static partial class PlatformDetection
         public static bool IsNetCore => Environment.Version.Major >= 5 || RuntimeInformation.FrameworkDescription.StartsWith(".NET Core", StringComparison.OrdinalIgnoreCase);
         public static bool IsMonoRuntime => Type.GetType("Mono.RuntimeStructs") != null;
         public static bool IsNotMonoRuntime => !IsMonoRuntime;
+        public static bool IsInterpreter => IsMonoInterpreter || IsCoreClrInterpreter;
+        public static bool IsNotInterpreter => !IsInterpreter;
         public static bool IsMonoInterpreter => GetIsRunningOnMonoInterpreter();
         public static bool IsNotMonoInterpreter => !IsMonoInterpreter;
         public static bool IsMonoAOT => Environment.GetEnvironmentVariable("MONO_AOT_MODE") == "aot";
diff --git a/src/libraries/System.Runtime/tests/System.Runtime.Tests/System/Runtime/JitInfoTests.cs b/src/libraries/System.Runtime/tests/System.Runtime.Tests/System/Runtime/JitInfoTests.cs
index e4243b4ab4d422..a336c0ff3bbc89 100644
--- a/src/libraries/System.Runtime/tests/System.Runtime.Tests/System/Runtime/JitInfoTests.cs
+++ b/src/libraries/System.Runtime/tests/System.Runtime.Tests/System/Runtime/JitInfoTests.cs
@@ -65,16 +65,26 @@ public void JitInfoIsPopulated()
                 Assert.True(beforeCompiledMethodCount > 0, $"Compiled method count not greater than 0! ({beforeCompiledMethodCount})");
             }
 
-            if (PlatformDetection.IsMonoInterpreter)
+            //
+            // Mono does not include compilation of IL into interpreter byte code in these counters
+            //
+            if (PlatformDetection.IsMonoInterpreter || PlatformDetection.IsBrowser)
             {
-                // Before and after will most likely be the same with the interpreter
+                // Before and after can be same in browser because of low precision timers
                 Assert.True(afterCompilationTime >= beforeCompilationTime, $"CompilationTime: after not greater than before! (after: {afterCompilationTime}, before: {beforeCompilationTime})");
+            }
+            else
+            {
+                Assert.True(afterCompilationTime > beforeCompilationTime, $"CompilationTime: after not greater than before! (after: {afterCompilationTime}, before: {beforeCompilationTime})");
+            }
+
+            if (PlatformDetection.IsMonoInterpreter)
+            {
                 Assert.True(afterCompiledILBytes >= beforeCompiledILBytes, $"Compiled IL bytes: after not greater than before! (after: {afterCompiledILBytes}, before: {beforeCompiledILBytes})");
                 Assert.True(afterCompiledMethodCount >= beforeCompiledMethodCount, $"Compiled method count: after not greater than before! (after: {afterCompiledMethodCount}, before: {beforeCompiledMethodCount})");
             }
             else
             {
-                Assert.True(afterCompilationTime > beforeCompilationTime, $"CompilationTime: after not greater than before! (after: {afterCompilationTime}, before: {beforeCompilationTime})");
                 Assert.True(afterCompiledILBytes > beforeCompiledILBytes, $"Compiled IL bytes: after not greater than before! (after: {afterCompiledILBytes}, before: {beforeCompiledILBytes})");
                 Assert.True(afterCompiledMethodCount > beforeCompiledMethodCount, $"Compiled method count: after not greater than before! (after: {afterCompiledMethodCount}, before: {beforeCompiledMethodCount})");
             }
diff --git a/src/libraries/System.Text.Json/tests/System.Text.Json.Tests/AssemblyInfo.cs b/src/libraries/System.Text.Json/tests/System.Text.Json.Tests/AssemblyInfo.cs
index 68af8051230a6d..fd1a3951000c4a 100644
--- a/src/libraries/System.Text.Json/tests/System.Text.Json.Tests/AssemblyInfo.cs
+++ b/src/libraries/System.Text.Json/tests/System.Text.Json.Tests/AssemblyInfo.cs
@@ -4,4 +4,4 @@
 using System;
 using Xunit;
 
-[assembly: ActiveIssue("Interpreter with debug runtime can be very slow", typeof(PlatformDetection), nameof(PlatformDetection.IsMonoInterpreter), nameof(PlatformDetection.IsDebugRuntime))]
+[assembly: ActiveIssue("Interpreter with debug runtime can be very slow", typeof(PlatformDetection), nameof(PlatformDetection.IsInterpreter), nameof(PlatformDetection.IsDebugRuntime))]
diff --git a/src/libraries/System.Text.Json/tests/System.Text.Json.Tests/Utf8JsonReaderTests.cs b/src/libraries/System.Text.Json/tests/System.Text.Json.Tests/Utf8JsonReaderTests.cs
index 8e3f68618e3eb9..3ebe23682c443d 100644
--- a/src/libraries/System.Text.Json/tests/System.Text.Json.Tests/Utf8JsonReaderTests.cs
+++ b/src/libraries/System.Text.Json/tests/System.Text.Json.Tests/Utf8JsonReaderTests.cs
@@ -1649,7 +1649,7 @@ public static void TestPartialJsonReaderSlicesSpecialNumbers(TestCaseType type,
         [InlineData(512)]
         public static void TestDepth(int depth)
         {
-            if (PlatformDetection.IsMonoInterpreter && depth >= 256)
+            if (PlatformDetection.IsInterpreter && depth >= 256)
             {
                 throw new SkipTestException("Takes very long to run on interpreter.");
             }