Which of the following is the best marker for drug induced lupus?
Anti histone antibodies
Anti DS DNA
ANA
Anti Smith Ab
Drug induced lupus is associated with anti histone antibodies which are positive in 95% of cases. Ref: Harrison's Principles of Internal Medicine, 17th Edition, Page 2076; 16th/ 1961, 1967; Pathologic Basis of Disease, Robbins, 7th Edition, Page 229 & 235; Drug-Induced Diseases: Prevention, Detection, and Management, James E. Tisdale, 2nd Edition, Section 2, Page 108