diff --git a/sentry_sdk/integrations/fastapi.py b/sentry_sdk/integrations/fastapi.py
index 10d4fd81ac..713c6d9efa 100644
--- a/sentry_sdk/integrations/fastapi.py
+++ b/sentry_sdk/integrations/fastapi.py
@@ -5,7 +5,7 @@
 import sentry_sdk
 from sentry_sdk.integrations import DidNotEnable
 from sentry_sdk.scope import should_send_default_pii
-from sentry_sdk.traces import NoOpStreamedSpan, StreamedSpan
+from sentry_sdk.traces import _is_sampled_streamed_span
 from sentry_sdk.tracing import SOURCE_FOR_STYLE, TransactionSource
 from sentry_sdk.tracing_utils import has_span_streaming_enabled
 from sentry_sdk.utils import transaction_from_function
@@ -95,9 +95,7 @@ def _sentry_call(*args: "Any", **kwargs: "Any") -> "Any":
                 if has_span_streaming_enabled(client.options):
                     current_span = current_scope.streamed_span
 
-                    if isinstance(current_span, StreamedSpan) and not isinstance(
-                        current_span, NoOpStreamedSpan
-                    ):
+                    if _is_sampled_streamed_span(current_span):
                         segment = current_span._segment
                         segment._update_active_thread()
 
diff --git a/sentry_sdk/integrations/starlette.py b/sentry_sdk/integrations/starlette.py
index 68ff98cc02..b1134a436a 100644
--- a/sentry_sdk/integrations/starlette.py
+++ b/sentry_sdk/integrations/starlette.py
@@ -21,7 +21,7 @@
 )
 from sentry_sdk.integrations.asgi import SentryAsgiMiddleware
 from sentry_sdk.scope import should_send_default_pii
-from sentry_sdk.traces import NoOpStreamedSpan, StreamedSpan, _get_current_streamed_span
+from sentry_sdk.traces import _get_current_streamed_span, _is_sampled_streamed_span
 from sentry_sdk.tracing import (
     SOURCE_FOR_STYLE,
     TransactionSource,
@@ -255,12 +255,7 @@ def _set_request_body_data_on_streaming_segment(
     info: "Optional[Dict[str, Any]]",
 ) -> None:
     current_span = _get_current_streamed_span()
-    if (
-        info
-        and "data" in info
-        and isinstance(current_span, StreamedSpan)
-        and not isinstance(current_span, NoOpStreamedSpan)
-    ):
+    if info and "data" in info and _is_sampled_streamed_span(current_span):
         with capture_internal_exceptions():
             current_span._segment.set_attribute(
                 "http.request.body.data",
@@ -557,9 +552,7 @@ def _sentry_sync_func(*args: "Any", **kwargs: "Any") -> "Any":
                 if span_streaming:
                     current_span = current_scope.streamed_span
 
-                    if isinstance(current_span, StreamedSpan) and not isinstance(
-                        current_span, NoOpStreamedSpan
-                    ):
+                    if _is_sampled_streamed_span(current_span):
                         current_span._segment._update_active_thread()
                 elif current_scope.transaction is not None:
                     current_scope.transaction.update_active_thread()
diff --git a/sentry_sdk/scope.py b/sentry_sdk/scope.py
index 656fabc564..2da13158e3 100644
--- a/sentry_sdk/scope.py
+++ b/sentry_sdk/scope.py
@@ -34,7 +34,12 @@
     _make_sampling_decision,
     PropagationContext,
 )
-from sentry_sdk.traces import _DEFAULT_PARENT_SPAN, StreamedSpan, NoOpStreamedSpan
+from sentry_sdk.traces import (
+    _DEFAULT_PARENT_SPAN,
+    StreamedSpan,
+    NoOpStreamedSpan,
+    _is_sampled_streamed_span,
+)
 from sentry_sdk.tracing import (
     BAGGAGE_HEADER_NAME,
     SENTRY_TRACE_HEADER_NAME,
@@ -585,11 +590,7 @@ def get_traceparent(self, *args: "Any", **kwargs: "Any") -> "Optional[str]":
 
         span_streaming = has_span_streaming_enabled(client.options)
         # If we have an active span, return traceparent from there
-        if (
-            span_streaming
-            and self.streamed_span is not None
-            and not isinstance(self.streamed_span, NoOpStreamedSpan)
-        ):
+        if span_streaming and _is_sampled_streamed_span(self.streamed_span):
             return self.streamed_span._to_traceparent()
         elif not span_streaming and self.span is not None:
             return self.span._to_traceparent()
@@ -609,11 +610,7 @@ def get_baggage(self, *args: "Any", **kwargs: "Any") -> "Optional[Baggage]":
 
         span_streaming = has_span_streaming_enabled(client.options)
         # If we have an active span, return baggage from there
-        if (
-            span_streaming
-            and self.streamed_span is not None
-            and not isinstance(self.streamed_span, NoOpStreamedSpan)
-        ):
+        if span_streaming and _is_sampled_streamed_span(self.streamed_span):
             return self.streamed_span._to_baggage()
         elif not span_streaming and self.span is not None:
             return self.span._to_baggage()
@@ -918,11 +915,7 @@ def streamed_span(self, span: "Optional[StreamedSpan]") -> None:
 
         # Also set _transaction and _transaction_info in streaming mode as this
         # is used for populating events and linking them to segments
-        if (
-            isinstance(span, StreamedSpan)
-            and not isinstance(span, NoOpStreamedSpan)
-            and span._is_segment()
-        ):
+        if _is_sampled_streamed_span(span) and span._is_segment():
             self._transaction = span.name
             if span._attributes.get("sentry.span.source"):
                 self._transaction_info["source"] = str(
diff --git a/sentry_sdk/traces.py b/sentry_sdk/traces.py
index 47c532c523..f31b8960af 100644
--- a/sentry_sdk/traces.py
+++ b/sentry_sdk/traces.py
@@ -31,7 +31,16 @@
 )
 
 if TYPE_CHECKING:
-    from typing import Any, Callable, Iterator, Optional, ParamSpec, TypeVar, Union
+    from typing import (
+        Any,
+        Callable,
+        Iterator,
+        Optional,
+        ParamSpec,
+        TypeGuard,
+        TypeVar,
+        Union,
+    )
     from sentry_sdk._types import Attributes, AttributeValue
     from sentry_sdk.profiler.continuous_profiler import ContinuousProfile
 
@@ -757,6 +766,11 @@ def make_db_query(sql):
         return decorator
 
 
+def _is_sampled_streamed_span(span: "Any") -> "TypeGuard[StreamedSpan]":
+    """Returns True if span is a StreamedSpan that was sampled (not a NoOpStreamedSpan)."""
+    return isinstance(span, StreamedSpan) and not isinstance(span, NoOpStreamedSpan)
+
+
 def _get_current_streamed_span(
     scope: "Optional[sentry_sdk.Scope]" = None,
 ) -> "Optional[StreamedSpan]":