"The Influence of Product Quality and Promotion on Purchasing Decisions through Price as a Mediating Variable for Rapid Antigen Sars-Cov2 at PT Roche is the subject of this study. Quantitative research is used by the author in this study. The sample in this study are customers of PT. Roche as many as 156 respondents. Non-Probability Sampling is used as the sampling method in this study. Partial Least Square (PLS) is the tool of choice for analysis. The results of the study show that (1) product quality has a positive and significant effect on purchasing decisions, (2) promotion has a positive and significant effect on purchasing decisions, (3) product quality has a positive and significant effect on purchasing decisions.significant effect on price, (4) promotion has a positive and significant effect on price, (5) price has a positive and significant effect on purchasing decisions, (6) product quality has a positive.effect.and.significant.to.decision.purchasing.thro ugh.price,(7)promotion.has.positive.and.significant.to.pri ce.positive and significant effect on purchasing decisions through price. According to the findings of this study, PT Roche should pay more attention to the wants and needs of customers and find new ways to entice them to buy products.

Keywords : Product Quality, Price,.Promotion,.Purchase Decision.