Can gastroscopy and negative blod test miss out on gluten intoleranse.with persistent problem and nutrient deficiency is there indication for new test?

Not usually: Assuming the correct tests were performed, negative results should rule out the disease. If you are still having symptoms though, you should try eliminating all gluten from your diet for 2 weeks and see if you feel better.

Yes and no.: The "gold standard" for diagnosing celiac disease (gluten allergy) is a biopsy of the small intestine. There are a few blood tests that are typically ordered and are usually positive in people with celiac disease, but they are not 100%. The stomach is usually not affected by gluten allergy. Rather than undergo more testing, go gluten free for 4-6 weeks and see if your symptoms improve.