you got insurance? you should call several physicians and see if you can find out how which one will see how much invega is in your system and to see if your insurance covers it. it's probably under half or a quarter of what you initially took, but i think that's when the release of it slows down, but it still goes down by roughly half apparently every 25-49 days depending on the mg of your shot. they measure it in ng/ml though. idk how that transcribes into mg but that might be something you can ask a physician. it's expensive. probably $1500-$3000, but it's not expensive for an insurance company.