diff --git a/code/modules/surgery/blood_filter.dm b/code/modules/surgery/blood_filter.dm
index 59eca843018..b52bed3186b 100644
--- a/code/modules/surgery/blood_filter.dm
+++ b/code/modules/surgery/blood_filter.dm
@@ -16,6 +16,36 @@
 		return FALSE
 	return ..()
 
+/datum/surgery_step/filter_blood/initiate(mob/user, mob/living/carbon/target, target_zone, obj/item/tool, datum/surgery/surgery, try_to_fail = FALSE)
+	if(!..())
+		return
+	while(has_filterable_chems(target, tool))
+		if(!..())
+			break
+
+/**
+ * Checks if the mob contains chems we can filter
+ *
+ * If the blood filter's whitelist is empty this checks if the mob contains any chems
+ * If the whitelist contains chems it checks if any chems in the mob match chems in the whitelist
+ *
+ * Arguments:
+ * * target - The mob to check the chems of
+ * * bloodfilter - The blood filter to check the whitelist of
+ */
+/datum/surgery_step/filter_blood/proc/has_filterable_chems(mob/living/carbon/target, obj/item/blood_filter/bloodfilter)
+	if(!length(target.reagents?.reagent_list))
+		return FALSE
+
+	if(!length(bloodfilter.whitelist))
+		return TRUE
+
+	for(var/datum/reagent/chem as anything in target.reagents.reagent_list)
+		if(chem.type in bloodfilter.whitelist)
+			return TRUE
+
+	return FALSE
+
 /datum/surgery_step/filter_blood
 	name = "Filter blood"
 	implements = list(/obj/item/blood_filter = 95)
@@ -30,12 +60,18 @@
 	display_pain(target, "You feel a throbbing pain in your chest!")
 
 /datum/surgery_step/filter_blood/success(mob/user, mob/living/carbon/target, target_zone, obj/item/tool, datum/surgery/surgery, default_display_results = FALSE)
+	var/obj/item/blood_filter/bloodfilter = tool
 	if(target.reagents?.total_volume)
 		for(var/datum/reagent/chem as anything in target.reagents.reagent_list)
-			target.reagents.remove_reagent(chem.type, min(chem.volume * 0.22, 10))
+			if(!length(bloodfilter.whitelist) || (chem.type in bloodfilter.whitelist))
+				target.reagents.remove_reagent(chem.type, min(chem.volume * 0.22, 10))
 	display_results(user, target, span_notice("\The [tool] pings as it finishes filtering [target]'s blood."),
 		span_notice("\The [tool] pings as it stops pumping [target]'s blood."),
 		"\The [tool] pings as it stops pumping.")
+
+	if(locate(/obj/item/healthanalyzer) in user.held_items)
+		chemscan(user, target)
+
 	return ..()
 
 /datum/surgery_step/filter_blood/failure(mob/user, mob/living/carbon/target, target_zone, obj/item/tool, datum/surgery/surgery)
diff --git a/code/modules/surgery/tools.dm b/code/modules/surgery/tools.dm
index 8b9e41f8585..6831eadda5c 100644
--- a/code/modules/surgery/tools.dm
+++ b/code/modules/surgery/tools.dm
@@ -453,3 +453,40 @@
 	attack_verb_simple = list("pump", "siphon")
 	tool_behaviour = TOOL_BLOODFILTER
 	toolspeed = 1
+	/// Assoc list of chem ids to names, used for deciding which chems to filter when used for surgery
+	var/list/whitelist = list()
+
+/obj/item/blood_filter/ui_interact(mob/user, datum/tgui/ui)
+	ui = SStgui.try_update_ui(user, src, ui)
+	if(!ui)
+		ui = new(user, src, "BloodFilter", name)
+		ui.open()
+
+/obj/item/blood_filter/ui_data(mob/user)
+	var/list/data = list()
+	var/list/chem_names = list()
+	for(var/key in whitelist)
+		chem_names += whitelist[key]
+	data["whitelist"] = chem_names
+	return data
+
+/obj/item/blood_filter/ui_act(action, params)
+	. = ..()
+	if(.)
+		return
+	. = TRUE
+	switch(action)
+		if("add")
+			var/new_chem_name = params["name"]
+			var/chem_id = get_chem_id(new_chem_name)
+			if(!chem_id || !new_chem_name)
+				to_chat(usr, span_warning("No such known reagent exists!"))
+				return
+			if(!(chem_id in whitelist))
+				whitelist[chem_id] = new_chem_name
+
+
+		if("remove")
+			var/chem_name = params["reagent"]
+			var/chem_id = get_chem_id(chem_name)
+			whitelist -= chem_id
diff --git a/tgui/packages/tgui/interfaces/BloodFilter.js b/tgui/packages/tgui/interfaces/BloodFilter.js
new file mode 100644
index 00000000000..45a56eb68a8
--- /dev/null
+++ b/tgui/packages/tgui/interfaces/BloodFilter.js
@@ -0,0 +1,29 @@
+import { useBackend, useLocalState } from '../backend';
+import { Stack } from '../components';
+import { Window } from '../layouts';
+import { ChemFilterPane } from './ChemFilter';
+
+export const BloodFilter = (props, context) => {
+  const { act, data } = useBackend(context);
+  const {
+    whitelist = [],
+  } = data;
+  const [chemName, setChemName] = useLocalState(context, 'chemName', '');
+  return (
+    <Window
+      width={500}
+      height={300}>
+      <Window.Content scrollable>
+        <Stack>
+          <Stack.Item grow>
+            <ChemFilterPane
+              title="Whitelist"
+              list={whitelist}
+              reagentName={chemName}
+              onReagentInput={value => setChemName(value)} />
+          </Stack.Item>
+        </Stack>
+      </Window.Content>
+    </Window>
+  );
+};