Results of ROC curve analyses that compared their diagnostic performance for sarcopenia showed that Cor 0 AM had the highest predictive power (AUC = 0.760) compared with haemoglobin, age, alanine transaminase and sex (AUC = 0.703, 0.695, 0.679 and 0.633, respectively) (Figure 4). Here, GPT is linked to sarcopenia.