The Anti-Centromere B Antibody IgG (CENTROM) test detects specific autoantibodies linked to Limited Systemic Sclerosis (CREST Syndrome), a type of scleroderma, helping diagnose skin/vessel issues like Raynaud’s, skin thickening, and organ involvement, often indicating early scleroderma or its specific subset with better prognosis, though no special prep is needed for the blood draw.