Estimation of protein catabolism by urinary nitrogen relies on the fact that

Question

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The nitrogen content of proteins is almost uniformly 16%, which allows for the estimation of protein catabolism by measuring urinary nitrogen. This is because proteins, when metabolized, release nitrogen, which is primarily excreted in the urine. By knowing the average nitrogen content of proteins, one can estimate the amount of protein catabolized based on the amount of nitrogen excreted.

Estimation of Protein Catabolism by Urinary Nitrogen Relies on the Fact