The 'T' series test for tetanus toxoid potency assesses the vaccine's immunogenicity. As per Indian Pharmacopoeia and UIP standards, what is the minimum potency requirement for adsorbed TT vaccine?

• A 100 IU per single human dose
• B 80 IU per single human dose
• C 60 IU per single human dose
• D 40 IU per single human dose ✓

Explanation

Adsorbed tetanus toxoid vaccine under UIP must have a minimum potency of 40 IU per single human dose as per Indian Pharmacopoeia and WHO standards. This is a frequently tested recall value in Indian PG entrance exams. Options C, B, and A are higher values that do not correspond to the standard potency cutoff for TT.

Reference: Park's Textbook of Preventive and Social Medicine, 27th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

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