Final answer:
Albumin is the most sensitive indicator of protein synthesis and catabolism.
Step-by-step explanation:
The most sensitive indicator of protein synthesis and catabolism in evaluating a patient's nutrition is albumin
. Albumin is the most abundant protein in human blood plasma and is synthesized in the liver. It plays a role in transporting hormones and fatty acids, maintaining osmotic pressures, and buffering pH. Monitoring albumin levels in blood tests can provide important information about a patient's protein status and overall nutrition.