<prompt> Life span of LNGIUD is -2 years5 years10 years12 years  <response>: Ans. is b i.e., 5 years IUDsLife spanFirst generation:Lippes loop obsolete--Second generationCopper-T--CuT-200-B4 yrCuT-2003yrCuT-220C--Nova-T5 yrMultiload - 2503 yr3755 yrCuT-3 80A10 yrThird generationProgestasert1 yrLNG-20 Mirena5 yr Ref: Novak p263; Note that Park mentions the life span of mirena to be 10 yrs 