Table 1. Histopathological factors contributing to false positive results in Her2-neu 3+ IHC.

No. Cases	Technical Error		Interpretation Error
	Blood Vessel	Benign Ducts	Cytoplasm Staining	Membranous staining
1.	+	-	+	-
2.	-	+	-	+
3.	-	-	+	-
4.	+	-	+	-
5.	+	+	+	-
6.	-	-	+	-
7.	-	+	+	-
8.	+	+	+	-
9.	+	+	-	+
10.	-	-	-	+
11.	-	+	+	-
12.	+	+	+	-
13.	+	+	+	-
14.	+	+	-	+
15.	+	-	-	+
16.	+	-	+	-
17.	-	-	+	+
18.	-	-	-	+