Objective:To explore the individual reference intervals of total testosterone(TT),free testosterone(FT),free androgen in-dex(FAI) and dehydroepiandrosterone sulfate(DHEAS) of healthy reproductive-age women in Chongqing. Methods:Totally 121 healthy reproductive-age women were enrolled,and serum TT,DHEAS,SHBG were measured,then FT and FAI were calculated.The (x±1.96 s) was calculated as the reference intervals of TT,cFT,DHEAS,and the 2.5th and 97.5th percentiles were calculated as the reference intervals of FAI. Results:(1)TT,cFT and DHEAS were in normal distribution,with levels of (0.46±0.16) ng/ml,(5.92±2.80) pg/ml,(222.81±86.82) μg/dl,respectively. However,FAI was in skewed distribution with the median and interquartile spacing of 2.60%(1.87-3.56)%. (2)The 95% individual reference intervals of TT,cFT,FAI and DHEAS were (0.15-0.77) ng/ml,(0.43-11.40) pg/ml,(0.90-9.34)%,(52.64-392.98) μg/dl,respectively. Conclusion:The individual reference intervals of TT,cFT,FAI and DHEAS of healthy reproductive-age women in Chongqing are preliminarily established.