diff --git a/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoCalculateService.cs b/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoCalculateService.cs
index 7b0720d1a..e4eb6f95a 100644
--- a/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoCalculateService.cs
+++ b/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoCalculateService.cs
@@ -2210,7 +2210,7 @@ namespace IRaCIS.Core.Application.Service.ReadingCalculate
             
             
             }).OrderByDescending(x=>x.Answer).FirstOrDefault();
-            if (maxSuv == null)
+            if (maxSuv == null|| maxSuv==0)
             {
                 return string.Empty;
             }