Hi guarev147....There is no questionnaire that I know of for parasites unfortunately.
Most people have problems when they give up carbs, especially those people with candida. Candida can actually cause you to crave sugars and carbs -- its poisons can affect your hormones as well as appetite.
If you don't eat sugar or carbs their should be no problem really because your body can easily inter-convert fats and proteins into glucose for energy whenever it likes. Another way is to take a tablespoon of virgin coconut oil twice a day with a meal. VCO unusually contains medium chain triglycerides which are converted and stored as glucogen in the liver. Whenever you need energy quickly the glucogen is then released into the blood by the liver and converted into what's called keytone bodies and these are easily absorbed into our cells and converted to glucose. Candida cannot utilize keytone bodies for energy but we can. What's more, coconut oil also acts to dissolve the outer lipid walls of enveloped viruses, bacteria and fungus thus killing them. So coconut oil acts as a good anti-fungal as well.