diff --git a/rattail_cognitive/labels.py b/rattail_cognitive/labels.py
index 34e3abb..230cb94 100644
--- a/rattail_cognitive/labels.py
+++ b/rattail_cognitive/labels.py
@@ -78,9 +78,25 @@ class BlasterTwoUpFormatter(labels.TwoUpCommandFormatter, BlasterFormatter):
     half_offset = 120
 
     def label_body_commands(self, product, x=0):
-        description = '%s %s' % (product.description, product.size)
+
+        # Always remove check digit from UPC.
+        upc = unicode(product.upc)[:-1]
+        if len(upc) != 13:
+            raise ValueError(u"UPC format is unexpected: {0}".format(repr(product.upc)))
+
+        # Create barcode command based on type of UPC.
+        if upc.startswith(u'00'): # UPC-A
+            barcode_type = u'UPCA+'
+            barcode = upc[2:]
+        elif upc.startswith(u'0'): # EAN-13
+            barcode_type = u'EAN13+'
+            barcode = upc[1:]
+        else:
+            raise ValueError(u"UPC format is invalid: {0}".format(repr(product.upc)))
+
+        description = u'{0} {1}'.format(product.description, product.size)
         return [
-            'STRING 5X7(1,1,1,1) %u 5 %s' % (x + 5, description[:17]),
-            'STRING 5X7(1,1,1,1) %u 15 %s' % (x + 5, description[17:]),
-            'BARCODE UPCA+ %u 75 25 %011u' % (x + 9, product.upc),
+            u'STRING 5X7(1,1,1,1) {0} 5 {1}'.format(x + 5, description[:17]),
+            u'STRING 5X7(1,1,1,1) {0} 15 {1}'.format(x + 5, description[17:]),
+            u'BARCODE {0} {1} 75 25 {2}'.format(barcode_type, x + 9, barcode),
             ]