How to code item actions?[1.10.2]

So I've made a few items in my mod, and I'm trying to figure out how to make an item action.

My item(s) of interest are a syringe(blood and not used), and I'm wondering how you code it so that when the syringe is used, it turns into a syringe with blood.

Here's my code for the item:

package DrDaron5.RobotMod.items.itemclasses;

import DrDaron5.RobotMod.Reference;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.potion.PotionEffect;
import net.minecraft.util.ResourceLocation;
import net.minecraft.world.World;

public class ItemSyringe extends Item{
String type;
public ItemSyringe(String unlocalizedName, String registryName){
	this.setUnlocalizedName(unlocalizedName);
	this.setRegistryName(Reference.MODID, unlocalizedName);
	type = "clean";
}
public ItemSyringe(String unlocalizedName, String registryName, boolean hasBlood){
	this.setUnlocalizedName(unlocalizedName);
	this.setRegistryName(Reference.MODID, unlocalizedName);
	type = "blood";
}
public boolean hasBlood(ItemSyringe sample){
	if(sample.returnType().equals("blood"))
		return true;
	else
		return false;

}
public String returnType(){
{
	return type;
}

}

}

Anyone know?

Thanks in advance