Hey u/Masek_Kiel , thanks for your question!

First and foremost if you’re experiencing chronic digestive problems you should see a medical professional such as your primary care provider or a gastroenterologist.

There are a handful of tests out there that people with digestive problems can take, namely microbiome/stool tests, food intolerance tests, and general blood tests.

Full transparency our startup, Injoy, has a microbiome test we are extremely proud of. We are a group of patients, doctors, and researchers so validation is core to our offering (we have peer reviewed publications and have begun a few clinical studies). Our microbiome test is unique to others because we have you take 3 samples instead of 1 so we can see how your microbiome is changing over time in comparison to your diet and lifestyle (tracked in our app). We also sequence our samples so we can see all the bacteria present as opposed to a few preselected ones which allows us to provide a more personalized report. Here’s a link to one of our example reports.

Other stool tests look for the presence of inflammatory proteins, blood, or parasites.

At-home food intolerance tests are also very common, but commonly leave much to be desired. Mainly due to the fact that they are most applicable to food allergies which mount an IgE response as opposed to food intolerances and sensitivities which do not. In other words, great for detecting a peanut allergy, but less useful for telling you to avoid tomatoes.

General blood panels are the standard type of blood test you do at the doctor’s office and are a great way to understand a wide swath of things such as your hormone levels and lipid levels. This is helpful when it comes to understanding your liver health, cancer risk, and more in addition to how your body is functioning overall.\

Hope this helps!