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creatine vs. creatinine

creatine vs. creatinine: What's the difference?

Creatinine is a byproduct of creatine. The amino acid creatine is a natural part of the muscles, and is processed to store energy for muscular contraction. The process by which it’s metabolized creates creatinine, which is then found in the urine, muscles, and blood.

[ kree-uh-teen, -tin ]
  1. an amino acid, C4H9N3O2, that is a constituent of the muscles of vertebrates and is phosphorylated to store energy used for muscular contraction.
[ kree-at-n-een, -in ]
  1. a crystalline end product of creatine metabolism, C4H7N3O, occurring in urine, muscle, and blood.

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