diff --git a/act/qc/bsrn_tests.py b/act/qc/bsrn_tests.py
index c2871acea8..d8ff0de574 100644
--- a/act/qc/bsrn_tests.py
+++ b/act/qc/bsrn_tests.py
@@ -821,7 +821,7 @@ def bsrn_comparison_tests(
                 test_meaning=test_meaning,
             )
 
-    def k_test(
+    def normalized_rradiance_test(
         self,
         test,
         dni=None,
@@ -878,7 +878,7 @@ def k_test(
             .. code-block:: python
 
                 ds = act.io.arm.read_arm_netcdf(act.tests.EXAMPLE_BRS, cleanup_qc=True)
-                ds.qcfilter.k_test(
+                ds.qcfilter.normalized_rradiance_test(
                     ['Clearness index', 'Upper total transmittance',
                      'Upper direct transmittance', 'Upper diffuse transmittance'],
                     dhi='down_short_diffuse_hemisp',
@@ -905,11 +905,11 @@ def k_test(
         if test_options[0].lower() in test:
             if dni is None:
                 raise RuntimeError(
-                    "Need to set 'dni' keyword to perform 'Clearness index' test in k_test()."
+                    "Need to set 'dni' keyword to perform 'Clearness index' test in normalized_rradiance_test()."
                 )
             if dhi is None:
                 raise RuntimeError(
-                    "Need to set 'dhi' keyword to perform 'Clearness index' test in k_test()."
+                    "Need to set 'dhi' keyword to perform 'Clearness index' test in normalized_rradiance_test()."
                 )
 
             if use_dask and isinstance(self._ds[dni].data, da.Array):
@@ -943,11 +943,11 @@ def k_test(
         if test_options[1].lower() in test:
             if dni is None:
                 raise RuntimeError(
-                    "Need to set 'dni' keyword to perform 'Upper total transmittance' test in k_test()."
+                    "Need to set 'dni' keyword to perform 'Upper total transmittance' test in normalized_rradiance_test()."
                 )
             if dhi is None:
                 raise RuntimeError(
-                    "Need to set 'dhi' keyword to perform 'Upper total transmittance' test in k_test()."
+                    "Need to set 'dhi' keyword to perform 'Upper total transmittance' test in normalized_rradiance_test()."
                 )
 
             if use_dask and isinstance(self._ds[dni].data, da.Array):
@@ -982,11 +982,11 @@ def k_test(
         if test_options[2].lower() in test:
             if dni is None:
                 raise RuntimeError(
-                    "Need to set 'dni' keyword to perform 'Upper direct transmittance' test in k_test()."
+                    "Need to set 'dni' keyword to perform 'Upper direct transmittance' test in normalized_rradiance_test()."
                 )
             if ghi is None:
                 raise RuntimeError(
-                    "Need to set 'ghi' keyword to perform 'Upper direct transmittance' test in k_test()."
+                    "Need to set 'ghi' keyword to perform 'Upper direct transmittance' test in normalized_rradiance_test()."
                 )
 
             if use_dask and isinstance(self._ds[dni].data, da.Array):
@@ -1019,7 +1019,7 @@ def k_test(
         if test_options[3].lower() in test:
             if dhi is None:
                 raise RuntimeError(
-                    "Need to set 'dhi' keyword to perform 'Upper diffuse transmittance' test in k_test()."
+                    "Need to set 'dhi' keyword to perform 'Upper diffuse transmittance' test in normalized_rradiance_test()."
                 )
 
             if use_dask and isinstance(self._ds[dhi].data, da.Array):
diff --git a/examples/qc/plot_qc_bsrn.py b/examples/qc/plot_qc_bsrn.py
index 419754c9d6..6ec1afe15d 100644
--- a/examples/qc/plot_qc_bsrn.py
+++ b/examples/qc/plot_qc_bsrn.py
@@ -65,7 +65,7 @@
 )
 
 # Add K-tests QC to ancillary QC variables.
-ds.qcfilter.k_test(
+ds.qcfilter.normalized_rradiance_test(
     [
         'Clearness index',
         'Upper total transmittance',
diff --git a/tests/qc/test_bsrn_tests.py b/tests/qc/test_bsrn_tests.py
index ccac0a9998..81e0c4b430 100644
--- a/tests/qc/test_bsrn_tests.py
+++ b/tests/qc/test_bsrn_tests.py
@@ -305,7 +305,7 @@ def test_bsrn_limits_test():
         assert np.sum(result) == 38
 
 
-def test_k_test():
+def test_normalized_rradiance_test():
     keep_vars = [
         'short_direct_normal',
         'down_short_diffuse_hemisp',
@@ -323,14 +323,14 @@ def test_k_test():
     ]
     for test in tests:
         with pytest.raises(RuntimeError):
-            ds.qcfilter.k_test(test)
+            ds.qcfilter.normalized_rradiance_test(test)
 
     for use_dask in [False, True]:
         ds = read_arm_netcdf(EXAMPLE_BRS, keep_variables=keep_vars)
         data = ds['short_direct_normal'].values
         data[1050:1100] = data[1050:1100] + 400
         ds['short_direct_normal'].values = data
-        ds.qcfilter.k_test(
+        ds.qcfilter.normalized_rradiance_test(
             tests,
             dni='short_direct_normal',
             dhi='down_short_diffuse_hemisp',