My Bachelor´s thesis deals with the examination of celiac disease in connection to osteoporosis. The aim of the thesis was to specify the level of antidotes against tissue transglutaminase in the class IgA and IgG in the serum with osteoporosis diagnosed patients, to interpret, based on the results of the study, possible link between osteoporosis and celiac disease as well as to compare the outcome with scientific data. I focused on the present knowledge of osteoporosis and celiac disease in the first part. As for celiac disease, I described its history and characteristics. I also paid attention to diagnostics of celiac disease with the assistance of laboratory serological tests ELISA. I mentioned the free-gluten diet treatment after that. As regards osteoporosis, I described its history, symptoms, forms, perils and complications which the disease causes. I conducted the methodical part of my work in the biochemical haematological laboratory Stafila where I work, with its seat in České Budějovice. As for measurements, I took them in the department of microbiology, where immunologic tests are also taken. I carried out the screening of celiac disease from serum, namely the determination of antidotes against tissue transglutaminase in the class IgA and IgG, with the aid of ELISA - a sandwich method. I took measurements with 58 osteoporosis diagnosed patients. I obtained the sera thanks to the supervisor of my thesis Mrs. Marie Ládová, who is at the head of an osteological outpatient department in České Budějovice. I stated the serological markers of celiac disease with the assistance of enzymatic immunoanalysis conducted on automatic analyzer Nexgen Four, which was provided by the firm Test-Line. I describe the analyzer, its specification, checking and calibration of the gadget together with determination checks in this part of the thesis. Additionally, there is described the principle of the method ELISA- sandwich, which is non-competitive enzymatic immunoanalysis. At the end of the section there is depicted the methodical procedure of my work, the preparation of working solutions and checks, the preparation and dilution of samples for analysis and working procedure for semiquantitative interpretation with positivity index and for quantitative interpretation U/ml. I continued with my own measurements. while respecting standard operations procedures of the laboratory Stafila, a limited liability company. The results of my measurements are processed in the third part of the thesis. The acquired results are given in a table: quantitative interpretation of the antidote against tTg IgA and IgG (U/ml) level in the sera of the osteoporosis diagnosed patients. Then I presented a graph interpreting the proportional relation of the antidote against tTg IgA and IgG levels in the sera of the osteoporosis diagnosed patients. There are included calibration graphs for tissue transglutaminase IgA and IgG and tables of the obtained data of checks for the methods in the results. 3 out of the 58 examined samples of osteoporotic patients were positive, they had the level of antibodies higher than 22 U/ml. One of the samples had marginal figures, which means it had the antidotes against tTg IgA an IgG between 18 and 22 U/ml. Positive results were found with patients born in 1976 and 1978. A patient born in 1962 appeared to have a marginal result. The acquired antidote figures against tissue transglutaminase in the class IgA and IgG are presented proportionally in the graph 1. 3 out of the 58 measured samples were positive, which represents 5%, and 1 sample was marginal, which is 2%. My analysis is based on the availability of the examined material and the potential of our laboratory. Celiac disease is an illness which was not paid much attention to in the past. Hypothesis about the link between osteoporosis and celiac disease has been proved.