Drugs that may Cause Positive Results in Direct Antiglobulin Tests

• Cephaloridine (Loridine)
• Cephalothin (Keflin)
• Chlorpromazine (Thorazine)
• Hydralazine (Apresoline)
• Isoniazid
• Levodopa
• Melphalan (Alkeran)
• Methyldopa (Aldomet)
• Penicillin
• Phenytoin (Dilantin)
• Procainamide (Pronestyl)
• Quinidine
• Rifampin
• Streptomycin
• Sulfonamides
• Tetracycline