The full answer
Yes — testing doesn't require symptoms to be useful
Because celiac disease can be silent, doctors often recommend testing for at-risk people — close relatives of someone diagnosed, or people with related autoimmune conditions — regardless of whether they have symptoms.
Why this matters even without symptoms
Untreated celiac disease can still cause long-term complications like nutrient deficiencies even without noticeable symptoms, which is the main reason early testing for at-risk people is worthwhile rather than waiting for symptoms to appear.
Important context
Individual symptoms, reactions, medical histories, food products, and local labeling rules can vary. Community experiences are not medical evidence.
For personal medical decisions, diagnosis, testing, or treatment, consult a qualified healthcare professional.