In order to make a serum profile of vicunas, the levels of hematocrite, hemoglobin, glucose, total protein, and cholesterol were established. There were taken 24 blood samples of adult vicunas (7 male and 17 female) from the South American Camelids Research Center Lachocc of Huancavelica National University, caught in the 2004 campaign. For the analyses were used microhematocrite and spectrophotometer methods. The results for both sexes for hematocrite, hemoglobin, glucose, total protein, and cholesterol were 37.00 ± 3.02% and 37.40 ± 3.84%; 11.94 ± 0.98 and 12.06 ± 1.24 g/dl and 4.30 ± 3.37 and 5.59 ± 3.15 g/dl, 211.43 ± 90.23 and 116.24 ± 77.44 mg/dl and 230.89 ± 74.76 and 144.25 ± 92.63 mg/dl respectively.