That's a great question! I have a similar situation. White coated - not looking like pictures of thrush. More white at back and less white toward front. I've been doing Liver Cleanses - 1 per month for the last 6 months. I used malic acid instead of apple juice for this cleanse to avoid the sugar. There's a spit test you can do to see if you have candida but I don't think it tells you if candida is in the blood. According to Moritz Liver & colon flushes will take care of candida along with good diet because candida loves waste and putrid stuff to feed on.