What role does Zöliakie Test play in Schlaf?

The provided context contains no information linking a celiac disease (Zöliakie) test to sleep. Celiac disease is an autoimmune enteropathy triggered by gluten; untreated it can cause malabsorption of iron, vitamin D, and B vitamins, which are known to affect sleep quality. The standard diagnostic test (tTG‑IgA) is intended for diagnosis, not sleep assessment. No clinical studies in the context validate the test as a predictor of sleep outcomes. Consumer tests claiming a role for celiac screening in sleep are marketing claims without robust evidence. Therefore, the evidence is unclear and not supported by the given sources.