RankRefine is a model developed to improve the accuracy of continuous attribute prediction. It is a postprocessing technique that leverages ranking information to improve the performance of existing regression models even in data-poor environments. Using a small reference set of query items and known attributes, it combines the output of the base regression model with rank-based estimates using an inversely distributed weighting scheme. In a molecular attribute prediction task, RankRefine has been shown to reduce the mean absolute error by up to 10% with just 20 pairwise comparisons obtained from a general-purpose large-scale language model (LLM), without any fine-tuning.