Effect of lunar phases on international normalized ratio in patients with deep vein thrombosis using warfarin

Although not statistically significant, this retrospective cohort study demonstrated a potential shift toward elevated prothrombin time levels during the third quarter lunar phase. While the results do not provide definitive evidence, they highlight the need for further large-scale, multicenter studies to explore the potential relationship between lunar phases and fluctuations in international normalized ratio values in patients undergoing warfarin therapy. Such research may provide clinicians with additional insights into managing anticoagulant treatments effectively.