: Vegetarian lacto-ovo is one of three large groups of vegetarians, where this type eating vegetable foodstuffs and abstained all kinds of meat, but still consumes milk and eggs. Vegetarian diet which regularly planned well, provide many health benefits. On the other hand, vegetarian potentially at risk of suffering from various diseases macro and micro nutrient deficiencies, for example, is protein. Albumin, which is one of the three major groups of plasma protein, globulin and fibrinogen in addition, contributes up to 80% of the osmotic pressure of plasma. Albumin can be obtained from meat, eggs, soy beans, nuts, and seeds. The levels of serum albumin is an important prognostic indicators because there is a correlation between the levels of serum albumin with increased risk of morbidity and mortality. Methods: The purpose of this study is to describe serum albumin levels in lacto-ovo vegetarians. This cross-sectional study was conducted in September 2015- January 2016. Sampling using total sampling method performed at the University of Klabat Airmadidi, with 25 respondents. Results: From the results of laboratory tests, 20 subjects (80%) with normal serum albumin levels, and 5 subjects (20%) with high levels of serum albumin. Conclusion: Based on the results, we can conclude that serum albumin levels in lacto-ovo vegetarian mostly normal