Evidence check: tTG IgA in the context of menopause

The tTG IgA test (tissue transglutaminase IgA) is the recommended first-line serological screening marker for celiac disease. In the context of menopause, diagnosing celiac disease can be challenging because menopausal symptoms such as fatigue, joint pain, and osteoporosis overlap with those of untreated celiac disease. A positive tTG IgA result requires confirmation by duodenal biopsy. However, IgA deficiency (more common in celiac patients) can cause false-negative tTG IgA; in such cases, IgG-based tests (e.g., tTG IgG or DGP IgG) should be used. The evidence for tTG IgA as a screening tool is strong (human-strong), but specific studies on its use during menopause are limited. The test alone does not replace clinical evaluation. Note: The provided context contains no specific information on tTG IgA or menopause; this answer is based on general medical knowledge.