unchanged:
- creatinine
- taurine

less:
- glycine
- hippurate
- alanine

gone:
- asparagine
- glutamine
- ethanolamine

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taurine:
the biological functions of taurine include inducing membrane stabilizing effects, regulation of adipose tissue, aiding in the metabolism and digestion of fats and absorption of fat soluble vitamins, help prevent epileptic seizures, promoting musculoskeletal health, etc.

creatinine:
it is a break-down product of creatine phosphate in muscle, and is usually produced at a fairly constant rate by the body

glycine:
the principal function of glycine is as a precursor to proteins. It is also a building block to numerous natural products.