Protective levels of Tetanus anti-toxin is:: (A) >0.01 IU/mL, (B) >0.5 IU/mL, (C) >1.0 IU/mL, (D) >5 IU/mL
Answer is A. a. >0.01IU/mL(Ref: Nelson's 20/e p 1381, Ghai 8/e p 193-194)Protective titer for diphtheria >0.1IU/mL and for tetanus >0.01IU/mL.