A nurse is reviewing the medical record of a client who has COPD. Which of the following laboratory findings indicates a need to request a dietary referral for the client?

Prealbumin is a protein that is produced by the liver and is an indicator of the body's nutritional status. A low prealbumin level can indicate malnutrition, which is common in clients with COPD. Therefore, a dietary referral can help the client meet their nutritional needs and prevent further complications.