diff --git a/IRaCIS.Core.Application/Service/ReadingCalculate/MRIPDFFCalculateService.cs b/IRaCIS.Core.Application/Service/ReadingCalculate/MRIPDFFCalculateService.cs
index 3662bb1c5..f51c9d151 100644
--- a/IRaCIS.Core.Application/Service/ReadingCalculate/MRIPDFFCalculateService.cs
+++ b/IRaCIS.Core.Application/Service/ReadingCalculate/MRIPDFFCalculateService.cs
@@ -622,7 +622,7 @@ namespace IRaCIS.Core.Application.Service.ReadingCalculate
             foreach (var item in questionInfo.TableRowInfoList)
             {
                 var avg = item.TableQuestionList.Where(x => x.QuestionMark == QuestionMark.AverageValue).FirstOrDefault();
-                var avgAnswer = "NA";
+                var avgAnswer = string.Empty;
                 List<QuestionMark?> questionMarks = new List<QuestionMark?>()
                 {
                     QuestionMark.FirstMeasurement,
@@ -635,7 +635,10 @@ namespace IRaCIS.Core.Application.Service.ReadingCalculate
                    var  avgAnswernum= answers.Select(x=>x.IsNullOrEmptyReturn0()).Average(x=>x);
                    avgAnswer = decimal.Round(avgAnswernum, inDto.DigitPlaces, MidpointRounding.AwayFromZero).ToString("F" + inDto.DigitPlaces.ToString());
                 }
-
+                if(item.TableQuestionList.Where(x => x.QuestionMark== QuestionMark.IsMeasurable).Select(x => x.Answer).FirstOrDefault().EqEnum(YesOrNoOrNa.No))
+                {
+                    avgAnswer = "NA";
+                }
                 tableAnswers.Add(new ReadingTableQuestionAnswer()
                 {
                     Answer = avgAnswer,