diff --git a/process_report/processors/add_institution_processor.py b/process_report/processors/add_institution_processor.py
index 1440c49..d5896a5 100644
--- a/process_report/processors/add_institution_processor.py
+++ b/process_report/processors/add_institution_processor.py
@@ -14,28 +14,6 @@
 
 @dataclass
 class AddInstitutionProcessor(processor.Processor):
-    @staticmethod
-    def _get_institute_mapping(institute_list: list):
-        institute_map = dict()
-        for institute_info in institute_list:
-            for domain in institute_info["domains"]:
-                institute_map[domain] = institute_info["display_name"]
-
-        return institute_map
-
-    @staticmethod
-    def _get_institution_from_pi(institute_map, pi_uname):
-        institution_domain = pi_uname.split("@")[-1]
-        for i in range(institution_domain.count(".") + 1):
-            if institution_name := institute_map.get(institution_domain, ""):
-                break
-            institution_domain = institution_domain[institution_domain.find(".") + 1 :]
-
-        if institution_name == "":
-            logger.warning(f"PI name {pi_uname} does not match any institution!")
-
-        return institution_name
-
     def _add_institution(self):
         """Determine every PI's institution name, logging any PI whose institution cannot be determined
         This is performed by `get_institution_from_pi()`, which tries to match the PI's username to
@@ -49,7 +27,7 @@ def _add_institution(self):
         The list of mappings are defined in `institute_map.json`.
         """
         institute_list = util.load_institute_list()
-        institute_map = self._get_institute_mapping(institute_list)
+        institute_map = util.get_institute_mapping(institute_list)
         self.data = self.data.astype({invoice.INSTITUTION_FIELD: "str"})
         for i, row in self.data.iterrows():
             pi_name = row[invoice.PI_FIELD]
@@ -58,7 +36,7 @@ def _add_institution(self):
             else:
                 self.data.at[
                     i, invoice.INSTITUTION_FIELD
-                ] = self._get_institution_from_pi(institute_map, pi_name)
+                ] = util.get_institution_from_pi(institute_map, pi_name)
 
     def _process(self):
         self._add_institution()
diff --git a/process_report/tests/unit/processors/test_add_institution_processor.py b/process_report/tests/unit/processors/test_add_institution_processor.py
index 775cb23..998e93c 100644
--- a/process_report/tests/unit/processors/test_add_institution_processor.py
+++ b/process_report/tests/unit/processors/test_add_institution_processor.py
@@ -1,9 +1,9 @@
 from unittest import TestCase
 
-from process_report.tests import util as test_utils
+from process_report import util
 
 
-class TestAddInstituteProcessor(TestCase):
+class TestAddInstitute(TestCase):
     def test_get_pi_institution(self):
         institute_map = {
             "harvard.edu": "Harvard University",
@@ -32,10 +32,7 @@ def test_get_pi_institution(self):
             "g@bidmc.harvard.edu": "Beth Israel Deaconess Medical Center",
         }
 
-        add_institute_proc = test_utils.new_add_institution_processor()
-
         for pi_email, answer in answers.items():
             self.assertEqual(
-                add_institute_proc._get_institution_from_pi(institute_map, pi_email),
-                answer,
+                util.get_institution_from_pi(institute_map, pi_email), answer
             )