Associations between occult malnutrition, MNA categories, and prolonged LOS were examined using chi-square tests and multivariable logistic regression models adjusted for age ≥ 85 years, sex, primary reason for hospital admission and comorbidity burden.<h4>Results</h4>Among 172 acutely hospitalized older adults (mean age 86.7 ± 6.0 years), hypoalbuminemia, anemia, and elevated CRP were observed in 42.4%, 46.5%, and 72.1% of patients, respectively. The gene discussed is CRP; the disease is Hypoalbuminemia.