diff --git a/cloud-functions/nodejs/functions/index.js b/cloud-functions/nodejs/functions/index.js
index 6f058a2..ea3e247 100644
--- a/cloud-functions/nodejs/functions/index.js
+++ b/cloud-functions/nodejs/functions/index.js
@@ -270,9 +270,12 @@ exports.retestMarking = async (event, context) => {
   const { _id, classificationResult } = event.value.fields;
   console.log("classificationResult", classificationResult.stringValue);
   if (classificationResult?.stringValue?.includes("Negative Borderline")) {
-    await admin.firestore().collection("patientData").where("_id", "==", _id.stringValue).update({
-      testStatus: false,
-      incubationTime: admin.firestore.FieldValue.delete()
-    });
+    const docs = await admin.firestore().collection("patientData").where("_id", "==", _id.stringValue).get();
+    docs?.forEach(async (doc) => {
+        await admin.firestore().collection("patientData").doc(doc.id).update({
+            testStatus: false,
+            incubationTime: admin.firestore.FieldValue.delete()
+          });
+    })
   }
 };