The hemogram, serum biochemistry, and electrolyte profile of aged rhesus monkeys (Macaca mulatta).

The hemogram, serum biochemicals, and electrolytes of aged (15- to 28-year-old) rhesus monkeys were compared with values for younger adults (4-14 years old) maintained under identical conditions. Aged males had lower mean corpuscular volume, serum iron and magnesium, and higher percentages of eosinophils, globulins, and triglycerides than adult males. Aged females had lower mean corpuscular hemoglobin, total leukocyte count, percentage of neutrophils, alkaline phosphatase and magnesium, and higher percentages of lymphocytes and eosinophils, globulins, and uric acid than adult females.