G6PD and hydrops fetalis: The derived risk equation was Combined testing Youden = -17.038 + -0.116 x G6PD + 0.102 x GGT + 0.016 x UA + 0.040 x Scr + 3.760 x CysC.<h4>Conclusions</h4>The integration of G6PD with hepatic and renal function biochemical parameters significantly enhances HRS risk stratification in HF patients.