Absolutely . Check your gear then double check it. Can never be too prepared. This is not to discourage use of a tourniquet at the ready, outside of kit, but suggesting that if you question the integrity of your TQ then cycle it out for a new one.
Also for those who keep an animal IFAK, the R.A.T.s TQ was designed for K9s, though I believe a swat-t may be a better alternative. (RATS: Should not be used on humans unless you have nothing else, and may cause nerve damages)