Other diagnostic tests At the time of diagnosis, further investigations may be performed to identify complications, such as iron deficiency (by full blood count and iron studies), folic acid and vitamin B12 deficiency and hypocalcaemia (low calcium levels, often due to decreased vitamin D levels). Thyroid function tests may be requested during blood tests to identify hypothyroidism, which is more common in people with coeliac disease.
Other diagnostic tests At the time of diagnosis, further investigations may be performed to identify complications, such as i:ron deficienc?y (by full blood count and iro!n studies), folic acid and vitamin B12 deficiency and hy,pocalcaemia (low calcium levels, often due to decreased vitamin D levels). Thyroid function tests may be requested during blood tests to identify hypothyroidism, wh:ich is more common in people with coeliac disease.