diff --git a/pint_pandas/pint_array.py b/pint_pandas/pint_array.py
index 01579c7..3eefc23 100644
--- a/pint_pandas/pint_array.py
+++ b/pint_pandas/pint_array.py
@@ -338,7 +338,7 @@ def __neg__(self):
         return -1 * self
 
     def __abs__(self):
-        return self._Q(np.abs(self._data), self._dtype.units)
+        return type(self)(self._Q(np.abs(self._data), self._dtype.units))
 
     @property
     def dtype(self):
diff --git a/pint_pandas/testsuite/test_pandas_extensiontests.py b/pint_pandas/testsuite/test_pandas_extensiontests.py
index 11d9281..535a226 100644
--- a/pint_pandas/testsuite/test_pandas_extensiontests.py
+++ b/pint_pandas/testsuite/test_pandas_extensiontests.py
@@ -574,11 +574,6 @@ def test_unstack(self, data, index, obj):
     def test_invert(self, data):
         base.BaseUnaryOpsTests.test_invert(self, data)
 
-    @pytest.mark.xfail(run=True, reason="np.positive requires pint 0.21")
-    @pytest.mark.parametrize("ufunc", [np.positive, np.negative, np.abs])
-    def test_unary_ufunc_dunder_equivalence(self, data, ufunc):
-        base.BaseUnaryOpsTests.test_unary_ufunc_dunder_equivalence(self, data, ufunc)
-
     # Accumulate
     def _supports_accumulation(self, ser: pd.Series, op_name: str) -> bool:
         return True