Background The objective was to investigate thepotential changes in muscular and amino acid plasma levels between ‘COPD patients’ and identical age control volunteers. Methodology The study involved 121 participants, including 32 health individuals and 89 COPD patients, aged 63±2 and 65±3.2 years, respectively. Fasting arterial blood was taken from the radial artery, and blood gas assessment was performed.‘Blood samples were also taken from a large draining vein in the cubital fossa to measure LBP levels. Results The study found that COPD patients had higher plasma LBP levels andREE/FFM (Resting Energy Expenditure/Fat-Free Mass) and LBP levels. A strong association was observed between’ LBP and REE/FFM. The overall plasma amino acid was reduced in COPD patientsprimary due to lower levels of nonessential amino acids such as asparagine (ASN), glutamine (GLN), alanine (ALA), and glutamic acid (GLU). Adverse relationships were discovered between LBP and SumAA (total amino acid concentration) and between LBP and individual amino acids like GLN, ASN, and ALA. Conclusion There were signs of disruptions in ‘intermediate metabolism among individuals with stable severe COPD, as evidenced by different changes in muscle and plasma AA levels’. Muscular AA changes in ‘COPD patients’ differ from those in illnesses linked to acute muscular wasting. Our research revealed a connection between inflammation and the noted drop in plasma AA levels.