Objective: Group A streptococci (GAS), also known as Streptococcus pyogenes, is a common cause of upper respiratory tract infections (pharyngitis) in children. Since the symptoms of streptococcal and non-streptococcal pharyngitis are very similar, laboratory tests are very important in differentiating these two infections. Culture and Rapid antigen tests (RAT) are used to detect GAS. However, the most important disadvantage of culturing a throat swab sown on a blood agar medium is the time it takes to obtain the culture result (overnight or longer). Streptococcal rapid antigen detection tests are more advantageous as they are performed directly from the swab taken directly from the patient's throat. In this study, we aimed to evaluate the effectiveness of RAT method in different ways according to culture test. Method: A total of 368 throat swab samples submitted to microbiology laboratory with suspicion of pharyngitis were evaluated between 1 March 2019 and 1 June 2019. The study was conducted in two steps. In the first step, all throat swab samples were analysed with RAT (Ecotest® strep A rapid test kit / Wellkang, UK) and culture. In the second stage, culture- grown beta-haemolytic colonies were analysed by HAT and after subculturing to the blood agar medium, bacitracin and trimethoprim-sulfomethetaxazole (SXT) discs were placed. Results: GAS was detected in 61 (17%) of 368 throat swab samples by culture. In the first stage, the sensitivity and specificity of RAT compared to culture were found to be 52% and 100%, respectively. The sensitivity and specificity of RAT in the second stage were 92% and 100%, respectively. Conclusions: It was understood with this study that analaysing HAT to the colonies grown in culture facilitates GAS detection.