diff --git a/code/game/gamemodes/changeling/changeling.dm b/code/game/gamemodes/changeling/changeling.dm
index 971fb7f5706..2d26e788c3e 100644
--- a/code/game/gamemodes/changeling/changeling.dm
+++ b/code/game/gamemodes/changeling/changeling.dm
@@ -9,7 +9,7 @@ var/list/possible_changeling_IDs = list("Alpha","Beta","Gamma","Delta","Epsilon"
 	config_tag = "changeling"
 	restricted_jobs = list("AI", "Cyborg")
 	protected_jobs = list("Security Officer", "Warden", "Detective", "Head of Security", "Captain", "Blueshield", "Nanotrasen Representative", "Security Pod Pilot", "Magistrate", "Brig Physician", "Internal Affairs Agent")
-	protected_species = list("Machine")
+	protected_species = list("Machine", "Slime People")
 	required_players = 2
 	required_players_secret = 10
 	required_enemies = 1
diff --git a/code/game/gamemodes/changeling/powers/tiny_prick.dm b/code/game/gamemodes/changeling/powers/tiny_prick.dm
index f63fdd6d862..2e6883196bc 100644
--- a/code/game/gamemodes/changeling/powers/tiny_prick.dm
+++ b/code/game/gamemodes/changeling/powers/tiny_prick.dm
@@ -37,6 +37,8 @@
 		if(H.species.flags & IS_SYNTHETIC)
 			user << "<span class='warning'>This won't work on synthetics.</span>"
 			return
+		if(H.species.flags & NO_SCAN) //Prevents transforming slimes and killing them instantly
+			user << "<span class='warning'>This won't work on a creature with abnormal genetic material.</span>"
 	if(!isturf(user.loc))
 		return
 	if(get_dist(user, target) > (user.mind.changeling.sting_range))
diff --git a/code/game/gamemodes/changeling/traitor_chan.dm b/code/game/gamemodes/changeling/traitor_chan.dm
index 193a2e3574d..ce4c8f77887 100644
--- a/code/game/gamemodes/changeling/traitor_chan.dm
+++ b/code/game/gamemodes/changeling/traitor_chan.dm
@@ -7,7 +7,7 @@
 	required_players_secret = 10
 	required_enemies = 2
 	recommended_enemies = 3
-	var/protected_species_changeling = list("Machine")
+	var/protected_species_changeling = list("Machine", "Slime People")
 
 /datum/game_mode/traitor/changeling/announce()
 	world << "<B>The current game mode is - Traitor+Changeling!</B>"
@@ -24,11 +24,11 @@
 		for(var/job in restricted_jobs)//Removing robots from the list
 			if(player.assigned_role == job)
 				possible_changelings -= player
-	
+
 	for(var/mob/new_player/player in player_list)
 		if((player.mind in possible_changelings) && (player.client.prefs.species in protected_species_changeling))
 			possible_changelings -= player.mind
-			
+
 	if(possible_changelings.len>0)
 		var/datum/mind/changeling = pick(possible_changelings)
 		//possible_changelings-=changeling
diff --git a/code/modules/reagents/Chemistry-Recipes.dm b/code/modules/reagents/Chemistry-Recipes.dm
index e768546c883..fafb26fedd2 100644
--- a/code/modules/reagents/Chemistry-Recipes.dm
+++ b/code/modules/reagents/Chemistry-Recipes.dm
@@ -730,7 +730,31 @@ datum
 			required_reagents = list("chlorine" = 1, "hydrogen" = 1, "nitrogen" = 1)
 			result_amount = 3
 
-
+///////Changeling Blood Test/////////////
+		changeling_test
+			name = "Changeling blood test"
+			id = "changelingblood"
+			result = "blood"
+			required_reagents = list("blood" = 5)
+			required_catalysts = list("fuel")
+			result_amount = 1 //Needs this in order to check the donor, as the data var in the reacted blood gets transferred.
+			on_reaction(var/datum/reagents/holder, var/created_volume)
+				if(!holder.reagent_list) //reagent_list is not null
+					return
+				var/datum/reagent/blood/B = locate() in holder.reagent_list
+				if(!B) //B is not null
+					return
+				var/mob/living/carbon/human/H = B.data["donor"]
+				if(!H) //H is not null.
+					return
+				if(H.mind && H.mind.changeling) //Checks if H, the blood donor is a ling.
+					for(var/mob/M in viewers(get_turf_loc(holder.my_atom), null))
+						M.show_message( "<span class='danger'>The blood writhes and wriggles and sizzles away from the container!</span>", 1, "<span class='warning'>You hear bubbling and sizzling.</span>", 2)
+				else
+					for(var/mob/M in viewers(get_turf_loc(holder.my_atom), null))
+						M.show_message( "<span class ='notice'>The blood seems to break apart in the fuel.</span>", 1)
+				holder.del_reagent("blood")
+				return
 /////////////////////////////////////OLD SLIME CORE REACTIONS ///////////////////////////////
 /*
 		slimepepper
diff --git a/code/modules/reagents/reagent_containers/syringes.dm b/code/modules/reagents/reagent_containers/syringes.dm
index a7332fc5b92..e24bcb4c90a 100644
--- a/code/modules/reagents/reagent_containers/syringes.dm
+++ b/code/modules/reagents/reagent_containers/syringes.dm
@@ -90,6 +90,23 @@
 							user << "\red You are unable to locate any blood."
 							return
 
+
+						var/time = 30 //Injecting through a hardsuit takes longer due to needing to find a port.
+						if(istype(target,/mob/living/carbon/human))
+							var/mob/living/carbon/human/H = T
+							if((H.species.bloodflags & BLOOD_SLIME) || (H.species.flags & NO_BLOOD))
+								usr << "<span class='warning'>You are unable to locate any blood.</span>"
+								return
+							if(H.wear_suit && istype(H.wear_suit,/obj/item/clothing/suit/space))
+								time = 60
+						if(target == user)
+							time = 0
+						else
+							for(var/mob/O in viewers(world.view, user))
+								O.show_message(text("\red <B>[] is trying to take a blood sample from []!</B>", user, target), 1)
+						if(!do_mob(user, target, time))
+							return
+
 						var/datum/reagent/B
 						if(istype(T,/mob/living/carbon/human))
 							var/mob/living/carbon/human/H = T
@@ -105,9 +122,10 @@
 							src.reagents.update_total()
 							src.on_reagent_change()
 							src.reagents.handle_reactions()
-						user << "\blue You take a blood sample from [target]"
-						for(var/mob/O in viewers(4, user))
-							O.show_message("\red [user] takes a blood sample from [target].", 1)
+
+							user << "\blue You take a blood sample from [target]"
+							for(var/mob/O in viewers(4, user))
+								O.show_message("\red [user] takes a blood sample from [target].", 1)
 
 				else //if not mob
 					if(!target.reagents.total_volume)