There are places that will do a stool analysis for you, but it's a lot of guesswork. Many quacks have also discovered that they can get people to pay a lot of money hoping for relief, and they don't hesitate to take advantage. It's a shame because there are honest people out there trying to help, but sorting the wheat from the chaff is quite the order.
My opinion is that if you're concerned, the best thing is to make sure you aren't overeating carbs (I suggest limiting carbs to 30-40g per meal and 120g per day, and avoid simple carbs) and ideally take a probiotic and/or consume fermented foods such as yogurt, kombucha, etc that naturally provide probiotics. The carb limiting is the most important. If you do nothing else, do that. Even if you don't have an issue with candida, you'll feel better overall and get healthier. Again this is just my opinion as someone who has spent years reading and experimenting on myself, but is not formally educated or trained so take with a grain of salt.
My opinion is that if you're concerned, the best thing is to make sure you aren't overeating carbs (I suggest limiting carbs to 30-40g per meal and 120g per day, and avoid simple carbs) and ideally take a probiotic and/or consume fermented foods such as yogurt, kombucha, etc that naturally provide probiotics. The carb limiting is the most important. If you do nothing else, do that. Even if you don't have an issue with candida, you'll feel better overall and get healthier. Again this is just my opinion as someone who has spent years reading and experimenting on myself, but is not formally educated or trained so take with a grain of salt.