diff --git a/src/Gemstone.Timeseries/ImmediateMeasurements.cs b/src/Gemstone.Timeseries/ImmediateMeasurements.cs
index a6204f4f1..d7e43053a 100644
--- a/src/Gemstone.Timeseries/ImmediateMeasurements.cs
+++ b/src/Gemstone.Timeseries/ImmediateMeasurements.cs
@@ -508,6 +508,18 @@ public void ClearMeasurementCache()
         m_measurements.Clear();
     }
 
+    /// <summary>
+    /// Determines whether the specified <see cref="MeasurementKey"/> exists in the current collection of immediate measurements.
+    /// </summary>
+    /// <param name="key">The <see cref="MeasurementKey"/> to locate in the collection.</param>
+    /// <returns>
+    /// <c>true</c> if the specified <see cref="MeasurementKey"/> exists in the collection; otherwise, <c>false</c>.
+    /// </returns>
+    public bool HasMeasurementID(MeasurementKey key)
+    {
+        return m_measurements?.ContainsKey(key) ?? false;
+    }
+
     /// <summary>
     /// Defines tagged measurements from a data table.
     /// </summary>