diff --git a/ISCamRecorder/MainForm.cs b/ISCamRecorder/MainForm.cs
index 6029cdd..8a125e0 100644
--- a/ISCamRecorder/MainForm.cs
+++ b/ISCamRecorder/MainForm.cs
@@ -54,6 +54,7 @@
         public DateTime RecodingTime { get; private set; } = DateTime.Now; // 録画開始時間
         public string RecodingTimeStr { get { return RecodingTime.ToString("yyyyMMdd_HHmmss"); } }  // 録画開始時間文字列
         public string OutputDir { get { return Path.Combine(Setting.SaveDir , $"rec{RecodingTimeStr}_{TxtSubjectName.Text}_{TxtCounter.Text}"); } } // データ保存フォルダ
+        public bool IsReverseBlood { get; private set; } = false;
 
         /// <summary>
         /// コンストラクタ
@@ -274,6 +275,7 @@
             // 保存準備
             _Sounds[1].Play();
             _Sensor.StopRecoding();
+            IsReverseBlood = false;
             this.Invoke((MethodInvoker)delegate {
                 State = STATE.Saving;
                 this.UpdateControlState();
@@ -309,6 +311,7 @@
         /// 逆血時
         /// </summary>
         public void ReverseBlood() {
+            IsReverseBlood = true;
             _Sounds[3].Play();
         }